数据完整性对于任何数据库系统来说都是很重要的一方面，它确保存储的数据保持准确、一致且有意义的。在 PostgreSQL 中，维护数据完整性的一个强大工具是使用检查约束。这些约束允许你定义数据必须遵守的规则，以防止无效数据的插入或修改。本文，我们将探讨如何在 PostgreSQL 中使用检查约束去验证数据，并使用免费的 DVD Rental Database 作为演示案例。
了解检查约束
检查约束是限制可以输入到表中的一个列或一组列中的值的规则。这些规则由数据库系统强制执行，防止插入或修改违反指定条件的行。检查约束是使用 CHECK 关键字定义的，后面跟着一个计算结果为布尔值的表达式。
验证租赁期限
假设有一个场景，这个场景使用“dvdrental”数据库中“rental”表的修改版，该表包含一个“rental_duration”列。在 Navicat 表设计器中，这个表的定义可能如下所示：
现在，假设我们希望确保每次租赁的时长始终大于零天。我们可以通过在“rentals_with_rental_period”表中添加检查约束来实现这一目标，具体做法如下：
ALTER TABLE rentals_with_rental_period
ADD CONSTRAINT rental_duration_check
CHECK (rental_duration > 0);
In Navicat we can add a check constraint in the "Checks" tab of the Table Designer. We just need to supply an expression and optional name. Navicat will create a unique name for us if we don't supply one!
在 Navicat 中，我们可以在表设计器的“检查”选项卡中添加检查约束。我们只需要提供一个表达式和可选的名称。如果我们不提供名称，Navicat 会为我们创建一个唯一的名称！
通过执行此约束，任何尝试在“rentals_with_rental_period”表中插入或更新一行，且租赁时长小于或等于零的操作都将导致错误，从而确保只允许有效的租赁时长。
确保有效评级
“dvdrental”数据库中“film”表的另一个例子涉及验证电影评级。假设我们想要将评级限制为某些特定值，如“G”、“PG”、“PG-13”、“R”或“NC-17”。我们可以通过检查约束来实现这一点：
ALTER TABLE film
ADD CONSTRAINT film_rating_check
CHECK (rating IN ('G', 'PG', 'PG-13', 'R', 'NC-17'));
在 Navicat 表设计器中，这是相同的约束：
现在，任何尝试在“film”表中插入或更新评级，但其值不是指定值之一的行的操作都将被拒绝，从而确保只允许有效的评级。
处理空值（NULL）
需要注意的是，除非约束中特别包含检查 NULL 的条件，否则检查约束不会应用于包含 NULL 值的一行或多行。例如，为了强制“film”表中的“rental_rate”列始终大于零且不为 NULL ，我们将使用以下约束：
ALTER TABLE film
ADD CONSTRAINT film_rental_rate_check
CHECK (rental_rate > 0 AND rental_rate IS NOT NULL);
在 Navicat 表设计器中，相同的约束如下：
结语
检查约束是一个确保 PostgreSQL 数据完整性的强大工具。通过定义数据必须遵守的规则，可以防止插入或修改无效数据，从而帮助维护数据库的准确性和一致性。将检查约束纳入数据库设计，可以构建稳定且可靠的数据系统，满足组织的需求。
Joomla!调试控制台
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时间: 1.94 ms / 59.81 ms 内存: 0.065 MB / 6.72 MB Application: beforeRenderModule mod_custom (Navicat Footer)
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时间: 0.05 ms / 60.07 ms 内存: -0.001 MB / 6.72 MB Application: beforeRenderModule mod_custom (Navicat Sitemap)
时间: 0.04 ms / 60.11 ms 内存: 0.005 MB / 6.73 MB Application: afterRenderModule mod_custom (Navicat Sitemap)
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数据库总查询：26.79 ms
7.58 MB (7,948,120 字节)
40条SQL查询记录 26.79 ms
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SELECT `data`
FROM `tbw0l_session`
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SELECT `session_id`
FROM `tbw0l_session`
WHERE `session_id` = X'72746f376d6d686936616e7670366d706d31396b7164306b6a6a'
LIMIT 1id select_type table partitions type possible_keys key key_len ref rows filtered Extra 1 SIMPLE tbw0l_session NULL const PRIMARY PRIMARY 194 const 1 100.00 Using index Status Duration starting 0.03 ms Executing hook on transaction 0.00 ms starting 0.00 ms checking permissions 0.00 ms Opening tables 0.01 ms init 0.00 ms System lock 0.01 ms optimizing 0.01 ms statistics 0.02 ms executing 0.01 ms end 0.00 ms query end 0.00 ms waiting for handler commit 0.01 ms closing tables 0.01 ms freeing items 0.01 ms cleaning up 0.01 ms # Caller File and line number 9 JDatabaseDriverMysqli->execute() JROOT/libraries/joomla/database/driver.php:1740 8 JDatabaseDriver->loadResult() JROOT/libraries/src/Session/MetadataManager.php:74 7 Joomla\CMS\Session\MetadataManager->createRecordIfNonExisting() JROOT/libraries/src/Application/CMSApplication.php:154 6 Joomla\CMS\Application\CMSApplication->checkSession() JROOT/libraries/src/Application/CMSApplication.php:828 5 Joomla\CMS\Application\CMSApplication->loadSession() JROOT/libraries/src/Application/CMSApplication.php:136 4 Joomla\CMS\Application\CMSApplication->__construct() JROOT/libraries/src/Application/SiteApplication.php:66 3 Joomla\CMS\Application\SiteApplication->__construct() JROOT/libraries/src/Application/CMSApplication.php:386 2 Joomla\CMS\Application\CMSApplication::getInstance() JROOT/libraries/src/Factory.php:140 1 Joomla\CMS\Factory::getApplication() JROOT/index.php:43 - 查询时间：2.03 ms 最后一次查询之后：0.07 ms 查询内存： 0.004 MB 内存（查询 1.064 MB 之前）
INSERT INTO `tbw0l_session` (`session_id`,`guest`,`time`,`userid`,`username`,`client_id`)
VALUES (X'72746f376d6d686936616e7670366d706d31396b7164306b6a6a', 1, 1790756360, 0, '', 0)无法EXPLAIN（解释）的查询：INSERT INTO `tbw0l_session` (`session_id`,`guest`,`time`,`userid`,`username`,`client_id`) VALUES (X'72746f376d6d686936616e7670366d706d31396b7164306b6a6a', 1, 1790756360, 0, '', 0)Status Duration starting 0.03 ms Executing hook on transaction 0.00 ms starting 0.00 ms checking permissions 0.00 ms Opening tables 0.01 ms init 0.00 ms System lock 0.00 ms update 0.08 ms end 0.00 ms query end 0.00 ms waiting for handler commit 1.81 ms closing tables 0.03 ms freeing items 0.02 ms cleaning up 0.01 ms # Caller File and line number 8 JDatabaseDriverMysqli->execute() JROOT/libraries/src/Session/MetadataManager.php:116 7 Joomla\CMS\Session\MetadataManager->createRecordIfNonExisting() JROOT/libraries/src/Application/CMSApplication.php:154 6 Joomla\CMS\Application\CMSApplication->checkSession() JROOT/libraries/src/Application/CMSApplication.php:828 5 Joomla\CMS\Application\CMSApplication->loadSession() JROOT/libraries/src/Application/CMSApplication.php:136 4 Joomla\CMS\Application\CMSApplication->__construct() JROOT/libraries/src/Application/SiteApplication.php:66 3 Joomla\CMS\Application\SiteApplication->__construct() JROOT/libraries/src/Application/CMSApplication.php:386 2 Joomla\CMS\Application\CMSApplication::getInstance() JROOT/libraries/src/Factory.php:140 1 Joomla\CMS\Factory::getApplication() JROOT/index.php:43 - 查询时间：0.39 ms 最后一次查询之后：0.27 ms 查询内存： 0.024 MB 内存（查询 1.095 MB 之前） 返回排数：35
SELECT `extension_id` AS `id`,`element` AS `option`,`params`,`enabled`
FROM `tbw0l_extensions`
WHERE `type` = 'component'
AND `state` = 0
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SELECT id, rules
FROM `tbw0l_viewlevels`id select_type table partitions type possible_keys key key_len ref rows filtered Extra 1 SIMPLE tbw0l_viewlevels NULL ALL NULL 没有可使用的索引键 NULL NULL 5 100.00 NULL Status Duration starting 0.03 ms Executing hook on transaction 0.00 ms starting 0.00 ms checking permissions 0.01 ms Opening tables 0.02 ms init 0.00 ms System lock 0.01 ms optimizing 0.00 ms statistics 0.01 ms preparing 0.01 ms executing 0.04 ms end 0.00 ms query end 0.00 ms waiting for handler commit 0.01 ms closing tables 0.01 ms freeing items 0.01 ms cleaning up 0.01 ms # Caller File and line number 10 JDatabaseDriverMysqli->execute() JROOT/libraries/joomla/database/driver.php:1506 9 JDatabaseDriver->loadAssocList() JROOT/libraries/src/Access/Access.php:1063 8 Joomla\CMS\Access\Access::getAuthorisedViewLevels() JROOT/libraries/src/User/User.php:458 7 Joomla\CMS\User\User->getAuthorisedViewLevels() JROOT/libraries/src/Plugin/PluginHelper.php:318 6 Joomla\CMS\Plugin\PluginHelper::load() JROOT/libraries/src/Plugin/PluginHelper.php:87 5 Joomla\CMS\Plugin\PluginHelper::getPlugin() JROOT/libraries/src/Plugin/PluginHelper.php:129 4 Joomla\CMS\Plugin\PluginHelper::isEnabled() JROOT/libraries/src/Application/SiteApplication.php:604 3 Joomla\CMS\Application\SiteApplication->initialiseApp() JROOT/libraries/src/Application/SiteApplication.php:212 2 Joomla\CMS\Application\SiteApplication->doExecute() JROOT/libraries/src/Application/CMSApplication.php:225 1 Joomla\CMS\Application\CMSApplication->execute() JROOT/index.php:46 - 查询时间：0.31 ms 最后一次查询之后：0.07 ms 查询内存： 0.021 MB 内存（查询 1.131 MB 之前） 返回排数：2
SELECT b.id
FROM tbw0l_usergroups AS a
LEFT JOIN tbw0l_usergroups AS b
ON b.lft <= a.lft
AND b.rgt >= a.rgt
WHERE a.id = 9id select_type table partitions type possible_keys key key_len ref rows filtered Extra 1 SIMPLE a NULL const PRIMARY PRIMARY 4 const 1 100.00 NULL 1 SIMPLE b NULL range idx_usergroup_nested_set_lookup idx_usergroup_nested_set_lookup 4 NULL 2 100.00 Using where; Using index Status Duration starting 0.07 ms Executing hook on transaction 0.00 ms starting 0.00 ms checking permissions 0.00 ms checking permissions 0.00 ms Opening tables 0.02 ms init 0.00 ms System lock 0.01 ms optimizing 0.01 ms statistics 0.05 ms preparing 0.02 ms executing 0.02 ms end 0.00 ms query end 0.00 ms waiting for handler commit 0.01 ms closing tables 0.01 ms freeing items 0.02 ms cleaning up 0.01 ms # Caller File and line number 11 JDatabaseDriverMysqli->execute() JROOT/libraries/joomla/database/driver.php:1550 10 JDatabaseDriver->loadColumn() JROOT/libraries/src/Access/Access.php:980 9 Joomla\CMS\Access\Access::getGroupsByUser() JROOT/libraries/src/Access/Access.php:1095 8 Joomla\CMS\Access\Access::getAuthorisedViewLevels() JROOT/libraries/src/User/User.php:458 7 Joomla\CMS\User\User->getAuthorisedViewLevels() JROOT/libraries/src/Plugin/PluginHelper.php:318 6 Joomla\CMS\Plugin\PluginHelper::load() JROOT/libraries/src/Plugin/PluginHelper.php:87 5 Joomla\CMS\Plugin\PluginHelper::getPlugin() JROOT/libraries/src/Plugin/PluginHelper.php:129 4 Joomla\CMS\Plugin\PluginHelper::isEnabled() JROOT/libraries/src/Application/SiteApplication.php:604 3 Joomla\CMS\Application\SiteApplication->initialiseApp() JROOT/libraries/src/Application/SiteApplication.php:212 2 Joomla\CMS\Application\SiteApplication->doExecute() JROOT/libraries/src/Application/CMSApplication.php:225 1 Joomla\CMS\Application\CMSApplication->execute() JROOT/index.php:46 - 查询时间：0.57 ms 最后一次查询之后：0.14 ms 查询内存： 0.030 MB 内存（查询 1.152 MB 之前） 返回排数：85
SELECT `folder` AS `type`,`element` AS `name`,`params` AS `params`,`extension_id` AS `id`
FROM tbw0l_extensions
WHERE enabled = 1
AND type = 'plugin'
AND state IN (0,1)
AND access IN (1,1,5)
ORDER BY orderingid select_type table partitions type possible_keys key key_len ref rows filtered Extra 1 SIMPLE tbw0l_extensions NULL ref extension extension 82 const 102 0.60 Using where; 使用filesort算法 Status Duration starting 0.04 ms Executing hook on transaction 0.00 ms starting 0.00 ms checking permissions 0.00 ms Opening tables 0.02 ms init 0.00 ms System lock 0.00 ms optimizing 0.01 ms statistics 0.04 ms preparing 0.02 ms executing 0.33 ms end 0.01 ms query end 0.00 ms waiting for handler commit 0.01 ms closing tables 0.01 ms freeing items 0.01 ms cleaning up 0.01 ms # Caller File and line number 11 JDatabaseDriverMysqli->execute() JROOT/libraries/joomla/database/driver.php:1701 10 JDatabaseDriver->loadObjectList() JROOT/libraries/src/Plugin/PluginHelper.php:351 9 Joomla\CMS\Plugin\PluginHelper::Joomla\CMS\Plugin\{closure}() Same as call in the line below. 8 call_user_func_array() JROOT/libraries/src/Cache/Controller/CallbackController.php:173 7 Joomla\CMS\Cache\Controller\CallbackController->get() JROOT/libraries/src/Plugin/PluginHelper.php:356 6 Joomla\CMS\Plugin\PluginHelper::load() JROOT/libraries/src/Plugin/PluginHelper.php:87 5 Joomla\CMS\Plugin\PluginHelper::getPlugin() JROOT/libraries/src/Plugin/PluginHelper.php:129 4 Joomla\CMS\Plugin\PluginHelper::isEnabled() JROOT/libraries/src/Application/SiteApplication.php:604 3 Joomla\CMS\Application\SiteApplication->initialiseApp() JROOT/libraries/src/Application/SiteApplication.php:212 2 Joomla\CMS\Application\SiteApplication->doExecute() JROOT/libraries/src/Application/CMSApplication.php:225 1 Joomla\CMS\Application\CMSApplication->execute() JROOT/index.php:46 - 查询时间：0.21 ms 最后一次查询之后：3.10 ms 查询内存： 0.022 MB 内存（查询 1.557 MB 之前） 返回排数：1
SELECT `value`
FROM `tbw0l_admintools_storage`
WHERE `key` = 'cparams'id select_type table partitions type possible_keys key key_len ref rows filtered Extra 1 SIMPLE tbw0l_admintools_storage NULL const PRIMARY PRIMARY 402 const 1 100.00 NULL Status Duration starting 0.04 ms Executing hook on transaction 0.00 ms starting 0.01 ms checking permissions 0.01 ms Opening tables 0.02 ms init 0.00 ms System lock 0.01 ms optimizing 0.01 ms statistics 0.02 ms preparing 0.01 ms executing 0.01 ms end 0.00 ms query end 0.00 ms waiting for handler commit 0.01 ms closing tables 0.01 ms freeing items 0.02 ms cleaning up 0.01 ms # Caller File and line number 14 JDatabaseDriverMysqli->execute() JROOT/libraries/joomla/database/driver.php:1740 13 JDatabaseDriver->loadResult() JROOT/administrator/components/com_admintools/Helper/Storage.php:122 12 Akeeba\AdminTools\Admin\Helper\Storage->load() JROOT/administrator/components/com_admintools/Helper/Storage.php:37 11 Akeeba\AdminTools\Admin\Helper\Storage->__construct() JROOT/administrator/components/com_admintools/Helper/Storage.php:49 10 Akeeba\AdminTools\Admin\Helper\Storage::getInstance() JROOT/plugins/system/admintools/admintools/main.php:409 9 plgSystemAdmintools->loadComponentParameters() JROOT/plugins/system/admintools/admintools/main.php:892 8 plgSystemAdmintools->initialize() JROOT/plugins/system/admintools/admintools/main.php:84 7 plgSystemAdmintools->__construct() JROOT/libraries/src/Plugin/PluginHelper.php:280 6 Joomla\CMS\Plugin\PluginHelper::import() JROOT/libraries/src/Plugin/PluginHelper.php:182 5 Joomla\CMS\Plugin\PluginHelper::importPlugin() JROOT/libraries/src/Application/CMSApplication.php:667 4 Joomla\CMS\Application\CMSApplication->initialiseApp() JROOT/libraries/src/Application/SiteApplication.php:686 3 Joomla\CMS\Application\SiteApplication->initialiseApp() JROOT/libraries/src/Application/SiteApplication.php:212 2 Joomla\CMS\Application\SiteApplication->doExecute() JROOT/libraries/src/Application/CMSApplication.php:225 1 Joomla\CMS\Application\CMSApplication->execute() JROOT/index.php:46 - 查询时间：0.26 ms 最后一次查询之后：0.19 ms 查询内存： 0.022 MB 内存（查询 1.567 MB 之前） 返回排数：1
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FROM tbw0l_languages
WHERE published=1
ORDER BY ordering ASCid select_type table partitions type possible_keys key key_len ref rows filtered Extra 1 SIMPLE tbw0l_languages NULL ALL NULL 没有可使用的索引键 NULL NULL 13 10.00 Using where; 使用filesort算法 Status Duration starting 0.04 ms Executing hook on transaction 0.00 ms starting 0.01 ms checking permissions 0.00 ms Opening tables 0.02 ms init 0.00 ms System lock 0.01 ms optimizing 0.01 ms statistics 0.01 ms preparing 0.02 ms executing 0.04 ms end 0.00 ms query end 0.00 ms waiting for handler commit 0.01 ms closing tables 0.00 ms freeing items 0.02 ms cleaning up 0.01 ms # Caller File and line number 13 JDatabaseDriverMysqli->execute() JROOT/libraries/joomla/database/driver.php:1701 12 JDatabaseDriver->loadObjectList() JROOT/libraries/src/Language/LanguageHelper.php:150 11 Joomla\CMS\Language\LanguageHelper::getLanguages() JROOT/plugins/system/admintools/admintools/main.php:700 10 plgSystemAdmintools->loadWAFExceptionsSEF() JROOT/plugins/system/admintools/admintools/main.php:640 9 plgSystemAdmintools->loadWAFExceptions() JROOT/plugins/system/admintools/admintools/main.php:901 8 plgSystemAdmintools->initialize() JROOT/plugins/system/admintools/admintools/main.php:84 7 plgSystemAdmintools->__construct() JROOT/libraries/src/Plugin/PluginHelper.php:280 6 Joomla\CMS\Plugin\PluginHelper::import() JROOT/libraries/src/Plugin/PluginHelper.php:182 5 Joomla\CMS\Plugin\PluginHelper::importPlugin() JROOT/libraries/src/Application/CMSApplication.php:667 4 Joomla\CMS\Application\CMSApplication->initialiseApp() JROOT/libraries/src/Application/SiteApplication.php:686 3 Joomla\CMS\Application\SiteApplication->initialiseApp() JROOT/libraries/src/Application/SiteApplication.php:212 2 Joomla\CMS\Application\SiteApplication->doExecute() JROOT/libraries/src/Application/CMSApplication.php:225 1 Joomla\CMS\Application\CMSApplication->execute() JROOT/index.php:46 - 查询时间：0.24 ms 最后一次查询之后：0.09 ms 查询内存： 0.021 MB 内存（查询 1.575 MB 之前） 返回排数：0
SELECT *
FROM `tbw0l_admintools_wafexceptions`
WHERE NOT(`option` LIKE 'com_%')id select_type table partitions type possible_keys key key_len ref rows filtered Extra 1 SIMPLE tbw0l_admintools_wafexceptions NULL ALL NULL 没有可使用的索引键 NULL NULL 1 100.00 Using where Status Duration starting 0.03 ms Executing hook on transaction 0.00 ms starting 0.00 ms checking permissions 0.00 ms Opening tables 0.02 ms init 0.00 ms System lock 0.01 ms optimizing 0.01 ms statistics 0.01 ms preparing 0.01 ms executing 0.02 ms end 0.00 ms query end 0.00 ms waiting for handler commit 0.01 ms closing tables 0.01 ms freeing items 0.02 ms cleaning up 0.01 ms # Caller File and line number 12 JDatabaseDriverMysqli->execute() JROOT/libraries/joomla/database/driver.php:1506 11 JDatabaseDriver->loadAssocList() JROOT/plugins/system/admintools/admintools/main.php:729 10 plgSystemAdmintools->loadWAFExceptionsSEF() JROOT/plugins/system/admintools/admintools/main.php:640 9 plgSystemAdmintools->loadWAFExceptions() JROOT/plugins/system/admintools/admintools/main.php:901 8 plgSystemAdmintools->initialize() JROOT/plugins/system/admintools/admintools/main.php:84 7 plgSystemAdmintools->__construct() JROOT/libraries/src/Plugin/PluginHelper.php:280 6 Joomla\CMS\Plugin\PluginHelper::import() JROOT/libraries/src/Plugin/PluginHelper.php:182 5 Joomla\CMS\Plugin\PluginHelper::importPlugin() JROOT/libraries/src/Application/CMSApplication.php:667 4 Joomla\CMS\Application\CMSApplication->initialiseApp() JROOT/libraries/src/Application/SiteApplication.php:686 3 Joomla\CMS\Application\SiteApplication->initialiseApp() JROOT/libraries/src/Application/SiteApplication.php:212 2 Joomla\CMS\Application\SiteApplication->doExecute() JROOT/libraries/src/Application/CMSApplication.php:225 1 Joomla\CMS\Application\CMSApplication->execute() JROOT/index.php:46 - 查询时间：0.32 ms 最后一次查询之后：1.94 ms 查询内存： 0.023 MB 内存（查询 1.790 MB 之前） 返回排数：26
SELECT `element`,`name`,`client_id`,`extension_id`
FROM `tbw0l_extensions`
WHERE `type` = 'language'
AND `state` = 0
AND `enabled` = 1id select_type table partitions type possible_keys key key_len ref rows filtered Extra 1 SIMPLE tbw0l_extensions NULL ref extension extension 82 const 26 1.00 Using where Status Duration starting 0.04 ms Executing hook on transaction 0.00 ms starting 0.00 ms checking permissions 0.00 ms Opening tables 0.02 ms init 0.00 ms System lock 0.01 ms optimizing 0.01 ms statistics 0.04 ms preparing 0.01 ms executing 0.07 ms end 0.00 ms query end 0.00 ms waiting for handler commit 0.01 ms closing tables 0.01 ms freeing items 0.02 ms cleaning up 0.01 ms # Caller File and line number 10 JDatabaseDriverMysqli->execute() JROOT/libraries/joomla/database/driver.php:1701 9 JDatabaseDriver->loadObjectList() JROOT/libraries/src/Language/LanguageHelper.php:209 8 Joomla\CMS\Language\LanguageHelper::getInstalledLanguages() JROOT/plugins/system/languagefilter/languagefilter.php:110 7 PlgSystemLanguageFilter->__construct() JROOT/libraries/src/Plugin/PluginHelper.php:280 6 Joomla\CMS\Plugin\PluginHelper::import() JROOT/libraries/src/Plugin/PluginHelper.php:182 5 Joomla\CMS\Plugin\PluginHelper::importPlugin() JROOT/libraries/src/Application/CMSApplication.php:667 4 Joomla\CMS\Application\CMSApplication->initialiseApp() JROOT/libraries/src/Application/SiteApplication.php:686 3 Joomla\CMS\Application\SiteApplication->initialiseApp() JROOT/libraries/src/Application/SiteApplication.php:212 2 Joomla\CMS\Application\SiteApplication->doExecute() JROOT/libraries/src/Application/CMSApplication.php:225 1 Joomla\CMS\Application\CMSApplication->execute() JROOT/index.php:46 - 查询时间：0.26 ms 最后一次查询之后：3.93 ms 查询内存： 0.021 MB 内存（查询 1.846 MB 之前） 返回排数：0
SELECT `source`,`keepurlparams`
FROM `tbw0l_admintools_redirects`
WHERE ((`dest` = 'company/aboutus/blog/1046-%E9%80%9A%E8%BF%87%E6%A3%80%E6%9F%A5%E7%BA%A6%E6%9D%9F%E7%A1%AE%E4%BF%9D-postgresql-%E7%9A%84%E6%95%B0%E6%8D%AE%E5%AE%8C%E6%95%B4%E6%80%A7') OR (`dest` = 'company/aboutus/blog/1046-%E9%80%9A%E8%BF%87%E6%A3%80%E6%9F%A5%E7%BA%A6%E6%9D%9F%E7%A1%AE%E4%BF%9D-postgresql-%E7%9A%84%E6%95%B0%E6%8D%AE%E5%AE%8C%E6%95%B4%E6%80%A7') OR ('company/aboutus/blog/1046-%E9%80%9A%E8%BF%87%E6%A3%80%E6%9F%A5%E7%BA%A6%E6%9D%9F%E7%A1%AE%E4%BF%9D-postgresql-%E7%9A%84%E6%95%B0%E6%8D%AE%E5%AE%8C%E6%95%B4%E6%80%A7' LIKE `dest`))
AND `published` = '1'
ORDER BY `ordering` DESC
LIMIT 1id select_type table partitions type possible_keys key key_len ref rows filtered Extra 1 SIMPLE tbw0l_admintools_redirects NULL ALL NULL 没有可使用的索引键 NULL NULL 1 100.00 Using where; 使用filesort算法 Status Duration starting 0.05 ms Executing hook on transaction 0.00 ms starting 0.00 ms checking permissions 0.00 ms Opening tables 0.02 ms init 0.00 ms System lock 0.01 ms optimizing 0.01 ms statistics 0.02 ms preparing 0.03 ms executing 0.02 ms end 0.00 ms query end 0.00 ms waiting for handler commit 0.01 ms closing tables 0.00 ms freeing items 0.02 ms cleaning up 0.01 ms # Caller File and line number 12 JDatabaseDriverMysqli->execute() JROOT/libraries/joomla/database/driver.php:1773 11 JDatabaseDriver->loadRow() JROOT/plugins/system/admintools/feature/urlredir.php:91 10 AtsystemFeatureUrlredir->onAfterInitialise() JROOT/plugins/system/admintools/admintools/main.php:308 9 plgSystemAdmintools->runFeature() JROOT/plugins/system/admintools/admintools/main.php:144 8 plgSystemAdmintools->onAfterInitialise() JROOT/libraries/joomla/event/event.php:70 7 JEvent->update() JROOT/libraries/joomla/event/dispatcher.php:160 6 JEventDispatcher->trigger() JROOT/libraries/src/Application/BaseApplication.php:108 5 Joomla\CMS\Application\BaseApplication->triggerEvent() JROOT/libraries/src/Application/CMSApplication.php:668 4 Joomla\CMS\Application\CMSApplication->initialiseApp() JROOT/libraries/src/Application/SiteApplication.php:686 3 Joomla\CMS\Application\SiteApplication->initialiseApp() JROOT/libraries/src/Application/SiteApplication.php:212 2 Joomla\CMS\Application\SiteApplication->doExecute() JROOT/libraries/src/Application/CMSApplication.php:225 1 Joomla\CMS\Application\CMSApplication->execute() JROOT/index.php:46 - 查询时间：4.81 ms 最后一次查询之后：0.75 ms 查询内存： 1.033 MB 内存（查询 1.889 MB 之前） 返回排数：730
SELECT m.id, m.menutype, m.title, m.alias, m.note, m.path AS route, m.link, m.type, m.level, m.language,`m`.`browserNav`, m.access, m.params, m.home, m.img, m.template_style_id, m.component_id, m.parent_id,e.element as component
FROM tbw0l_menu AS m
LEFT JOIN tbw0l_extensions AS e
ON m.component_id = e.extension_id
WHERE m.published = 1
AND m.parent_id > 0
AND m.client_id = 0
ORDER BY m.lftid select_type table partitions type possible_keys key key_len ref rows filtered Extra 1 SIMPLE m NULL ALL idx_client_id_parent_id_alias_language 没有可使用的索引键 NULL NULL 746 10.00 Using where; 使用filesort算法 1 SIMPLE e NULL eq_ref PRIMARY PRIMARY 4 cn_navicat_com_20230208.m.component_id 1 100.00 Using where Status Duration starting 0.05 ms Executing hook on transaction 0.00 ms starting 0.00 ms checking permissions 0.00 ms checking permissions 0.00 ms Opening tables 0.03 ms init 0.00 ms System lock 0.01 ms optimizing 0.01 ms statistics 0.06 ms preparing 0.03 ms executing 4.36 ms end 0.01 ms query end 0.00 ms waiting for handler commit 0.12 ms closing tables 0.01 ms freeing items 0.01 ms cleaning up 0.01 ms # Caller File and line number 23 JDatabaseDriverMysqli->execute() JROOT/libraries/joomla/database/driver.php:1701 22 JDatabaseDriver->loadObjectList() JROOT/libraries/src/Menu/SiteMenu.php:93 21 Joomla\CMS\Menu\SiteMenu->Joomla\CMS\Menu\{closure}() Same as call in the line below. 20 call_user_func_array() JROOT/libraries/src/Cache/Controller/CallbackController.php:173 19 Joomla\CMS\Cache\Controller\CallbackController->get() JROOT/libraries/src/Menu/SiteMenu.php:101 18 Joomla\CMS\Menu\SiteMenu->load() JROOT/libraries/src/Menu/AbstractMenu.php:78 17 Joomla\CMS\Menu\AbstractMenu->__construct() JROOT/libraries/src/Menu/SiteMenu.php:62 16 Joomla\CMS\Menu\SiteMenu->__construct() JROOT/libraries/src/Menu/AbstractMenu.php:142 15 Joomla\CMS\Menu\AbstractMenu::getInstance() JROOT/libraries/src/Application/CMSApplication.php:417 14 Joomla\CMS\Application\CMSApplication->getMenu() JROOT/libraries/src/Application/SiteApplication.php:275 13 Joomla\CMS\Application\SiteApplication->getMenu() JROOT/libraries/src/Router/SiteRouter.php:65 12 Joomla\CMS\Router\SiteRouter->__construct() JROOT/libraries/src/Router/Router.php:189 11 Joomla\CMS\Router\Router::getInstance() JROOT/libraries/src/Application/CMSApplication.php:533 10 Joomla\CMS\Application\CMSApplication::getRouter() JROOT/libraries/src/Application/SiteApplication.php:403 9 Joomla\CMS\Application\SiteApplication::getRouter() JROOT/plugins/system/languagefilter/languagefilter.php:145 8 PlgSystemLanguageFilter->onAfterInitialise() JROOT/libraries/joomla/event/event.php:70 7 JEvent->update() JROOT/libraries/joomla/event/dispatcher.php:160 6 JEventDispatcher->trigger() JROOT/libraries/src/Application/BaseApplication.php:108 5 Joomla\CMS\Application\BaseApplication->triggerEvent() JROOT/libraries/src/Application/CMSApplication.php:668 4 Joomla\CMS\Application\CMSApplication->initialiseApp() JROOT/libraries/src/Application/SiteApplication.php:686 3 Joomla\CMS\Application\SiteApplication->initialiseApp() JROOT/libraries/src/Application/SiteApplication.php:212 2 Joomla\CMS\Application\SiteApplication->doExecute() JROOT/libraries/src/Application/CMSApplication.php:225 1 Joomla\CMS\Application\CMSApplication->execute() JROOT/index.php:46 - 查询时间：0.43 ms 最后一次查询之后：5.46 ms 查询内存： 0.022 MB 内存（查询 4.955 MB 之前） 返回排数：0
SELECT c.id, c.asset_id, c.access, c.alias, c.checked_out, c.checked_out_time, c.created_time, c.created_user_id, c.description, c.extension, c.hits, c.language, c.level, c.lft, c.metadata, c.metadesc, c.metakey, c.modified_time, c.note, c.params, c.parent_id, c.path, c.published, c.rgt, c.title, c.modified_user_id, c.version,
CASE WHEN CHAR_LENGTH(c.alias) != 0 THEN CONCAT_WS(':', c.id, c.alias) ELSE c.id END as slug
FROM `tbw0l_categories` AS `s`
INNER JOIN `tbw0l_categories` AS `c`
ON (s.lft < c.lft
AND c.lft < s.rgt
AND c.language IN ('zh-CN','*')) OR (c.lft <= s.lft
AND s.rgt <= c.rgt)
WHERE (c.extension='com_content' OR c.extension='system')
AND c.access IN (1,1,5)
AND c.published = 1
AND s.id = 1046
ORDER BY c.lftid select_type table partitions type possible_keys key key_len ref rows filtered Extra 1 SIMPLE NULL NULL NULL NULL 没有可使用的索引键 NULL NULL NULL NULL no matching row in const table Status Duration starting 0.13 ms Executing hook on transaction 0.00 ms starting 0.01 ms checking permissions 0.00 ms checking permissions 0.00 ms Opening tables 0.06 ms init 0.00 ms System lock 0.01 ms optimizing 0.03 ms statistics 0.06 ms executing 0.02 ms end 0.00 ms query end 0.00 ms waiting for handler commit 0.01 ms closing tables 0.01 ms freeing items 0.02 ms cleaning up 0.01 ms # Caller File and line number 14 JDatabaseDriverMysqli->execute() JROOT/libraries/joomla/database/driver.php:1701 13 JDatabaseDriver->loadObjectList() JROOT/libraries/src/Categories/Categories.php:324 12 Joomla\CMS\Categories\Categories->_load() JROOT/libraries/src/Categories/Categories.php:184 11 Joomla\CMS\Categories\Categories->get() JROOT/components/com_content/helpers/legacyrouter.php:350 10 ContentRouterRulesLegacy->parse() JROOT/libraries/src/Component/Router/RouterView.php:266 9 Joomla\CMS\Component\Router\RouterView->parse() JROOT/libraries/src/Router/SiteRouter.php:438 8 Joomla\CMS\Router\SiteRouter->parseSefRoute() JROOT/libraries/src/Router/Router.php:482 7 Joomla\CMS\Router\Router->_parseSefRoute() JROOT/libraries/src/Router/Router.php:227 6 Joomla\CMS\Router\Router->parse() JROOT/libraries/src/Router/SiteRouter.php:139 5 Joomla\CMS\Router\SiteRouter->parse() JROOT/libraries/src/Application/CMSApplication.php:1142 4 Joomla\CMS\Application\CMSApplication->route() JROOT/libraries/src/Application/SiteApplication.php:796 3 Joomla\CMS\Application\SiteApplication->route() JROOT/libraries/src/Application/SiteApplication.php:218 2 Joomla\CMS\Application\SiteApplication->doExecute() JROOT/libraries/src/Application/CMSApplication.php:225 1 Joomla\CMS\Application\CMSApplication->execute() JROOT/index.php:46 - 查询时间：0.17 ms 最后一次查询之后：0.09 ms 查询内存： 0.021 MB 内存（查询 4.960 MB 之前） 返回排数：1
SELECT `alias`,`catid`
FROM `tbw0l_content`
WHERE `id` = 1046id select_type table partitions type possible_keys key key_len ref rows filtered Extra 1 SIMPLE tbw0l_content NULL const PRIMARY PRIMARY 4 const 1 100.00 NULL Status Duration starting 0.03 ms Executing hook on transaction 0.00 ms starting 0.00 ms checking permissions 0.00 ms Opening tables 0.01 ms init 0.00 ms System lock 0.00 ms optimizing 0.01 ms statistics 0.03 ms preparing 0.01 ms executing 0.01 ms end 0.00 ms query end 0.00 ms waiting for handler commit 0.01 ms closing tables 0.01 ms freeing items 0.01 ms cleaning up 0.01 ms # Caller File and line number 12 JDatabaseDriverMysqli->execute() JROOT/libraries/joomla/database/driver.php:1662 11 JDatabaseDriver->loadObject() JROOT/components/com_content/helpers/legacyrouter.php:366 10 ContentRouterRulesLegacy->parse() JROOT/libraries/src/Component/Router/RouterView.php:266 9 Joomla\CMS\Component\Router\RouterView->parse() JROOT/libraries/src/Router/SiteRouter.php:438 8 Joomla\CMS\Router\SiteRouter->parseSefRoute() JROOT/libraries/src/Router/Router.php:482 7 Joomla\CMS\Router\Router->_parseSefRoute() JROOT/libraries/src/Router/Router.php:227 6 Joomla\CMS\Router\Router->parse() JROOT/libraries/src/Router/SiteRouter.php:139 5 Joomla\CMS\Router\SiteRouter->parse() JROOT/libraries/src/Application/CMSApplication.php:1142 4 Joomla\CMS\Application\CMSApplication->route() JROOT/libraries/src/Application/SiteApplication.php:796 3 Joomla\CMS\Application\SiteApplication->route() JROOT/libraries/src/Application/SiteApplication.php:218 2 Joomla\CMS\Application\SiteApplication->doExecute() JROOT/libraries/src/Application/CMSApplication.php:225 1 Joomla\CMS\Application\CMSApplication->execute() JROOT/index.php:46 - 查询时间：0.31 ms 最后一次查询之后：0.30 ms 查询内存： 0.022 MB 内存（查询 4.983 MB 之前） 返回排数：1
SELECT `extension_id` AS `id`,`element` AS `option`,`params`,`enabled`
FROM `tbw0l_extensions`
WHERE `type` = 'library'
AND `element` = 'joomla'id select_type table partitions type possible_keys key key_len ref rows filtered Extra 1 SIMPLE tbw0l_extensions NULL ref element_clientid,element_folder_clientid,extension extension 484 const,const 1 100.00 NULL Status Duration starting 0.05 ms Executing hook on transaction 0.00 ms starting 0.01 ms checking permissions 0.01 ms Opening tables 0.03 ms init 0.01 ms System lock 0.01 ms optimizing 0.01 ms statistics 0.06 ms preparing 0.01 ms executing 0.03 ms end 0.00 ms query end 0.00 ms waiting for handler commit 0.01 ms closing tables 0.01 ms freeing items 0.03 ms cleaning up 0.01 ms # Caller File and line number 15 JDatabaseDriverMysqli->execute() JROOT/libraries/joomla/database/driver.php:1662 14 JDatabaseDriver->loadObject() JROOT/libraries/src/Helper/LibraryHelper.php:167 13 Joomla\CMS\Helper\LibraryHelper::Joomla\CMS\Helper\{closure}() Same as call in the line below. 12 call_user_func_array() JROOT/libraries/src/Cache/Controller/CallbackController.php:173 11 Joomla\CMS\Cache\Controller\CallbackController->get() JROOT/libraries/src/Helper/LibraryHelper.php:175 10 Joomla\CMS\Helper\LibraryHelper::loadLibrary() JROOT/libraries/src/Helper/LibraryHelper.php:43 9 Joomla\CMS\Helper\LibraryHelper::getLibrary() JROOT/libraries/src/Helper/LibraryHelper.php:90 8 Joomla\CMS\Helper\LibraryHelper::getParams() JROOT/libraries/src/Version.php:321 7 Joomla\CMS\Version->getMediaVersion() JROOT/libraries/src/Factory.php:778 6 Joomla\CMS\Factory::createDocument() JROOT/libraries/src/Factory.php:234 5 Joomla\CMS\Factory::getDocument() JROOT/libraries/src/Application/WebApplication.php:1137 4 Joomla\CMS\Application\WebApplication->loadDocument() JROOT/libraries/src/Application/SiteApplication.php:133 3 Joomla\CMS\Application\SiteApplication->dispatch() JROOT/libraries/src/Application/SiteApplication.php:233 2 Joomla\CMS\Application\SiteApplication->doExecute() JROOT/libraries/src/Application/CMSApplication.php:225 1 Joomla\CMS\Application\CMSApplication->execute() JROOT/index.php:46 - 查询时间：2.30 ms 最后一次查询之后：0.11 ms 查询内存： 0.005 MB 内存（查询 4.975 MB 之前）
UPDATE `tbw0l_extensions`
SET `params` = '{\"mediaversion\":\"2f710e66d7f38447b743e0d6b9380ef4\"}'
WHERE `type` = 'library'
AND `element` = 'joomla'无法EXPLAIN（解释）的查询：UPDATE `tbw0l_extensions` SET `params` = '{\"mediaversion\":\"2f710e66d7f38447b743e0d6b9380ef4\"}' WHERE `type` = 'library' AND `element` = 'joomla'Status Duration starting 0.03 ms Executing hook on transaction 0.01 ms starting 0.01 ms checking permissions 0.04 ms Opening tables 0.02 ms init 0.00 ms System lock 0.06 ms updating 0.05 ms end 0.00 ms query end 0.00 ms waiting for handler commit 1.98 ms closing tables 0.01 ms freeing items 0.01 ms cleaning up 0.01 ms # Caller File and line number 10 JDatabaseDriverMysqli->execute() JROOT/libraries/src/Helper/LibraryHelper.php:117 9 Joomla\CMS\Helper\LibraryHelper::saveParams() JROOT/libraries/src/Version.php:372 8 Joomla\CMS\Version->setMediaVersion() JROOT/libraries/src/Version.php:331 7 Joomla\CMS\Version->getMediaVersion() JROOT/libraries/src/Factory.php:778 6 Joomla\CMS\Factory::createDocument() JROOT/libraries/src/Factory.php:234 5 Joomla\CMS\Factory::getDocument() JROOT/libraries/src/Application/WebApplication.php:1137 4 Joomla\CMS\Application\WebApplication->loadDocument() JROOT/libraries/src/Application/SiteApplication.php:133 3 Joomla\CMS\Application\SiteApplication->dispatch() JROOT/libraries/src/Application/SiteApplication.php:233 2 Joomla\CMS\Application\SiteApplication->doExecute() JROOT/libraries/src/Application/CMSApplication.php:225 1 Joomla\CMS\Application\CMSApplication->execute() JROOT/index.php:46 - 查询时间：0.34 ms 最后一次查询之后：0.35 ms 查询内存： 0.019 MB 内存（查询 5.010 MB 之前） 返回排数：4
SELECT id, home, template, s.params
FROM tbw0l_template_styles as s
LEFT JOIN tbw0l_extensions as e
ON e.element=s.template
AND e.type='template'
AND e.client_id=s.client_id
WHERE s.client_id = 0
AND e.enabled = 1id select_type table partitions type possible_keys key key_len ref rows filtered Extra 1 SIMPLE e NULL ref element_clientid,element_folder_clientid,extension extension 82 const 6 1.00 Using index condition; Using where 1 SIMPLE s NULL ref idx_template,idx_client_id,idx_client_id_home idx_template 202 cn_navicat_com_20230208.e.element 1 66.67 Using index condition; Using where Status Duration starting 0.04 ms Executing hook on transaction 0.00 ms starting 0.00 ms checking permissions 0.00 ms checking permissions 0.00 ms Opening tables 0.03 ms init 0.00 ms System lock 0.01 ms optimizing 0.01 ms statistics 0.06 ms preparing 0.03 ms executing 0.07 ms end 0.00 ms query end 0.00 ms waiting for handler commit 0.01 ms closing tables 0.01 ms freeing items 0.02 ms cleaning up 0.01 ms # Caller File and line number 6 JDatabaseDriverMysqli->execute() JROOT/libraries/joomla/database/driver.php:1701 5 JDatabaseDriver->loadObjectList() JROOT/libraries/src/Application/SiteApplication.php:486 4 Joomla\CMS\Application\SiteApplication->getTemplate() JROOT/libraries/src/Application/SiteApplication.php:168 3 Joomla\CMS\Application\SiteApplication->dispatch() JROOT/libraries/src/Application/SiteApplication.php:233 2 Joomla\CMS\Application\SiteApplication->doExecute() JROOT/libraries/src/Application/CMSApplication.php:225 1 Joomla\CMS\Application\CMSApplication->execute() JROOT/index.php:46 - 查询时间：0.51 ms 最后一次查询之后：1.03 ms 查询内存： 0.027 MB 内存（查询 5.213 MB 之前） 返回排数：35
SELECT `id`,`name`,`rules`,`parent_id`
FROM `tbw0l_assets`
WHERE `name` IN ('root.1','com_actionlogs','com_admin','com_admintools','com_ajax','com_associations','com_banners','com_cache','com_categories','com_checkin','com_config','com_contact','com_content','com_contenthistory','com_cpanel','com_fields','com_finder','com_installer','com_joomlaupdate','com_languages','com_login','com_mailto','com_media','com_menus','com_messages','com_modules','com_newsfeeds','com_plugins','com_postinstall','com_privacy','com_redirect','com_search','com_tags','com_templates','com_users','com_wrapper')id select_type table partitions type possible_keys key key_len ref rows filtered Extra 1 SIMPLE tbw0l_assets NULL range idx_asset_name idx_asset_name 202 NULL 36 100.00 Using index condition Status Duration starting 0.07 ms Executing hook on transaction 0.00 ms starting 0.00 ms checking permissions 0.00 ms Opening tables 0.03 ms init 0.00 ms System lock 0.01 ms optimizing 0.01 ms statistics 0.08 ms preparing 0.01 ms executing 0.22 ms end 0.00 ms query end 0.00 ms waiting for handler commit 0.01 ms closing tables 0.01 ms freeing items 0.02 ms cleaning up 0.01 ms # Caller File and line number 18 JDatabaseDriverMysqli->execute() JROOT/libraries/joomla/database/driver.php:1701 17 JDatabaseDriver->loadObjectList() JROOT/libraries/src/Access/Access.php:429 16 Joomla\CMS\Access\Access::preloadComponents() JROOT/libraries/src/Access/Access.php:213 15 Joomla\CMS\Access\Access::preload() JROOT/libraries/src/Access/Access.php:531 14 Joomla\CMS\Access\Access::getAssetRules() JROOT/libraries/src/Access/Access.php:183 13 Joomla\CMS\Access\Access::check() JROOT/libraries/src/User/User.php:398 12 Joomla\CMS\User\User->authorise() JROOT/components/com_content/models/article.php:58 11 ContentModelArticle->populateState() JROOT/libraries/src/MVC/Model/BaseDatabaseModel.php:457 10 Joomla\CMS\MVC\Model\BaseDatabaseModel->getState() JROOT/components/com_content/models/article.php:251 9 ContentModelArticle->hit() JROOT/components/com_content/controller.php:113 8 ContentController->display() JROOT/libraries/src/MVC/Controller/BaseController.php:702 7 Joomla\CMS\MVC\Controller\BaseController->execute() JROOT/components/com_content/content.php:43 6 require_once JROOT/components/com_content/content.php JROOT/libraries/src/Component/ComponentHelper.php:402 5 Joomla\CMS\Component\ComponentHelper::executeComponent() JROOT/libraries/src/Component/ComponentHelper.php:377 4 Joomla\CMS\Component\ComponentHelper::renderComponent() JROOT/libraries/src/Application/SiteApplication.php:194 3 Joomla\CMS\Application\SiteApplication->dispatch() JROOT/libraries/src/Application/SiteApplication.php:233 2 Joomla\CMS\Application\SiteApplication->doExecute() JROOT/libraries/src/Application/CMSApplication.php:225 1 Joomla\CMS\Application\CMSApplication->execute() JROOT/index.php:46 - 查询时间：1.06 ms 最后一次查询之后：0.11 ms 查询内存： 0.180 MB 内存（查询 5.259 MB 之前） 返回排数：1022
SELECT `id`,`name`,`rules`,`parent_id`
FROM `tbw0l_assets`
WHERE `name` LIKE 'com_content.%' OR `name` = 'com_content' OR `parent_id` = 0id select_type table partitions type possible_keys key key_len ref rows filtered Extra 1 SIMPLE tbw0l_assets NULL ALL idx_asset_name,idx_parent_id 没有可使用的索引键 NULL NULL 1208 22.96 Using where Status Duration starting 0.03 ms Executing hook on transaction 0.00 ms starting 0.00 ms checking permissions 0.00 ms Opening tables 0.02 ms init 0.00 ms System lock 0.00 ms optimizing 0.01 ms statistics 0.04 ms preparing 0.01 ms executing 0.84 ms end 0.01 ms query end 0.00 ms waiting for handler commit 0.01 ms closing tables 0.01 ms freeing items 0.02 ms cleaning up 0.01 ms # Caller File and line number 18 JDatabaseDriverMysqli->execute() JROOT/libraries/joomla/database/driver.php:1701 17 JDatabaseDriver->loadObjectList() JROOT/libraries/src/Access/Access.php:359 16 Joomla\CMS\Access\Access::preloadPermissions() JROOT/libraries/src/Access/Access.php:226 15 Joomla\CMS\Access\Access::preload() JROOT/libraries/src/Access/Access.php:540 14 Joomla\CMS\Access\Access::getAssetRules() JROOT/libraries/src/Access/Access.php:183 13 Joomla\CMS\Access\Access::check() JROOT/libraries/src/User/User.php:398 12 Joomla\CMS\User\User->authorise() JROOT/components/com_content/models/article.php:58 11 ContentModelArticle->populateState() JROOT/libraries/src/MVC/Model/BaseDatabaseModel.php:457 10 Joomla\CMS\MVC\Model\BaseDatabaseModel->getState() JROOT/components/com_content/models/article.php:251 9 ContentModelArticle->hit() JROOT/components/com_content/controller.php:113 8 ContentController->display() JROOT/libraries/src/MVC/Controller/BaseController.php:702 7 Joomla\CMS\MVC\Controller\BaseController->execute() JROOT/components/com_content/content.php:43 6 require_once JROOT/components/com_content/content.php JROOT/libraries/src/Component/ComponentHelper.php:402 5 Joomla\CMS\Component\ComponentHelper::executeComponent() JROOT/libraries/src/Component/ComponentHelper.php:377 4 Joomla\CMS\Component\ComponentHelper::renderComponent() JROOT/libraries/src/Application/SiteApplication.php:194 3 Joomla\CMS\Application\SiteApplication->dispatch() JROOT/libraries/src/Application/SiteApplication.php:233 2 Joomla\CMS\Application\SiteApplication->doExecute() JROOT/libraries/src/Application/CMSApplication.php:225 1 Joomla\CMS\Application\CMSApplication->execute() JROOT/index.php:46 - 查询时间：1.12 ms 最后一次查询之后：0.91 ms 查询内存： 0.027 MB 内存（查询 6.168 MB 之前） 返回排数：8
SHOW FULL COLUMNS
FROM `tbw0l_assets`无法EXPLAIN（解释）的查询：SHOW FULL COLUMNS FROM `tbw0l_assets`Status Duration starting 0.04 ms Executing hook on transaction 0.00 ms starting 0.04 ms checking permissions 0.00 ms checking permissions 0.00 ms Opening tables 0.40 ms init 0.01 ms System lock 0.01 ms optimizing 0.02 ms statistics 0.07 ms preparing 0.02 ms Creating tmp table 0.05 ms executing 0.07 ms checking permissions 0.01 ms checking permissions 0.01 ms checking permissions 0.06 ms checking permissions 0.02 ms checking permissions 0.01 ms checking permissions 0.02 ms checking permissions 0.02 ms checking permissions 0.01 ms checking permissions 0.01 ms checking permissions 0.03 ms end 0.00 ms query end 0.00 ms waiting for handler commit 0.08 ms closing tables 0.02 ms freeing items 0.05 ms cleaning up 0.01 ms # Caller File and line number 21 JDatabaseDriverMysqli->execute() JROOT/libraries/joomla/database/driver.php:1701 20 JDatabaseDriver->loadObjectList() JROOT/libraries/joomla/database/driver/mysqli.php:448 19 JDatabaseDriverMysqli->getTableColumns() JROOT/libraries/src/Table/Table.php:261 18 Joomla\CMS\Table\Table->getFields() JROOT/libraries/src/Table/Table.php:180 17 Joomla\CMS\Table\Table->__construct() JROOT/libraries/src/Table/Asset.php:61 16 Joomla\CMS\Table\Asset->__construct() JROOT/libraries/src/Access/Access.php:783 15 Joomla\CMS\Access\Access::getAssetId() JROOT/libraries/src/Access/Access.php:544 14 Joomla\CMS\Access\Access::getAssetRules() JROOT/libraries/src/Access/Access.php:183 13 Joomla\CMS\Access\Access::check() JROOT/libraries/src/User/User.php:398 12 Joomla\CMS\User\User->authorise() JROOT/components/com_content/models/article.php:58 11 ContentModelArticle->populateState() JROOT/libraries/src/MVC/Model/BaseDatabaseModel.php:457 10 Joomla\CMS\MVC\Model\BaseDatabaseModel->getState() JROOT/components/com_content/models/article.php:251 9 ContentModelArticle->hit() JROOT/components/com_content/controller.php:113 8 ContentController->display() JROOT/libraries/src/MVC/Controller/BaseController.php:702 7 Joomla\CMS\MVC\Controller\BaseController->execute() JROOT/components/com_content/content.php:43 6 require_once JROOT/components/com_content/content.php JROOT/libraries/src/Component/ComponentHelper.php:402 5 Joomla\CMS\Component\ComponentHelper::executeComponent() JROOT/libraries/src/Component/ComponentHelper.php:377 4 Joomla\CMS\Component\ComponentHelper::renderComponent() JROOT/libraries/src/Application/SiteApplication.php:194 3 Joomla\CMS\Application\SiteApplication->dispatch() JROOT/libraries/src/Application/SiteApplication.php:233 2 Joomla\CMS\Application\SiteApplication->doExecute() JROOT/libraries/src/Application/CMSApplication.php:225 1 Joomla\CMS\Application\CMSApplication->execute() JROOT/index.php:46 - 查询时间：0.19 ms 最后一次查询之后：0.18 ms 查询内存： 0.024 MB 内存（查询 6.191 MB 之前） 返回排数：0
SELECT *
FROM tbw0l_assets
WHERE `name` = 'com_content.article.1046'id select_type table partitions type possible_keys key key_len ref rows filtered Extra 1 SIMPLE NULL NULL NULL NULL 没有可使用的索引键 NULL NULL NULL NULL no matching row in const table Status Duration starting 0.03 ms Executing hook on transaction 0.00 ms starting 0.00 ms checking permissions 0.00 ms Opening tables 0.02 ms init 0.00 ms System lock 0.01 ms optimizing 0.01 ms statistics 0.03 ms executing 0.01 ms end 0.00 ms query end 0.00 ms waiting for handler commit 0.01 ms closing tables 0.01 ms freeing items 0.03 ms cleaning up 0.01 ms # Caller File and line number 18 JDatabaseDriverMysqli->execute() JROOT/libraries/joomla/database/driver.php:1465 17 JDatabaseDriver->loadAssoc() JROOT/libraries/src/Table/Table.php:747 16 Joomla\CMS\Table\Table->load() JROOT/libraries/src/Access/Access.php:784 15 Joomla\CMS\Access\Access::getAssetId() JROOT/libraries/src/Access/Access.php:544 14 Joomla\CMS\Access\Access::getAssetRules() JROOT/libraries/src/Access/Access.php:183 13 Joomla\CMS\Access\Access::check() JROOT/libraries/src/User/User.php:398 12 Joomla\CMS\User\User->authorise() JROOT/components/com_content/models/article.php:58 11 ContentModelArticle->populateState() JROOT/libraries/src/MVC/Model/BaseDatabaseModel.php:457 10 Joomla\CMS\MVC\Model\BaseDatabaseModel->getState() JROOT/components/com_content/models/article.php:251 9 ContentModelArticle->hit() JROOT/components/com_content/controller.php:113 8 ContentController->display() JROOT/libraries/src/MVC/Controller/BaseController.php:702 7 Joomla\CMS\MVC\Controller\BaseController->execute() JROOT/components/com_content/content.php:43 6 require_once JROOT/components/com_content/content.php JROOT/libraries/src/Component/ComponentHelper.php:402 5 Joomla\CMS\Component\ComponentHelper::executeComponent() JROOT/libraries/src/Component/ComponentHelper.php:377 4 Joomla\CMS\Component\ComponentHelper::renderComponent() JROOT/libraries/src/Application/SiteApplication.php:194 3 Joomla\CMS\Application\SiteApplication->dispatch() JROOT/libraries/src/Application/SiteApplication.php:233 2 Joomla\CMS\Application\SiteApplication->doExecute() JROOT/libraries/src/Application/CMSApplication.php:225 1 Joomla\CMS\Application\CMSApplication->execute() JROOT/index.php:46 - 查询时间：0.15 ms 最后一次查询之后：0.31 ms 查询内存： 0.024 MB 内存（查询 6.216 MB 之前） 返回排数：0
SELECT *
FROM tbw0l_assets
WHERE `name` = 'com_content.article.1046'id select_type table partitions type possible_keys key key_len ref rows filtered Extra 1 SIMPLE NULL NULL NULL NULL 没有可使用的索引键 NULL NULL NULL NULL no matching row in const table Status Duration starting 0.02 ms Executing hook on transaction 0.00 ms starting 0.00 ms checking permissions 0.00 ms Opening tables 0.01 ms init 0.00 ms System lock 0.00 ms optimizing 0.01 ms statistics 0.02 ms executing 0.01 ms end 0.00 ms query end 0.00 ms waiting for handler commit 0.00 ms closing tables 0.00 ms freeing items 0.01 ms cleaning up 0.01 ms # Caller File and line number 18 JDatabaseDriverMysqli->execute() JROOT/libraries/joomla/database/driver.php:1465 17 JDatabaseDriver->loadAssoc() JROOT/libraries/src/Table/Table.php:747 16 Joomla\CMS\Table\Table->load() JROOT/libraries/src/Access/Access.php:784 15 Joomla\CMS\Access\Access::getAssetId() JROOT/libraries/src/Access/Access.php:544 14 Joomla\CMS\Access\Access::getAssetRules() JROOT/libraries/src/Access/Access.php:183 13 Joomla\CMS\Access\Access::check() JROOT/libraries/src/User/User.php:398 12 Joomla\CMS\User\User->authorise() JROOT/components/com_content/models/article.php:58 11 ContentModelArticle->populateState() JROOT/libraries/src/MVC/Model/BaseDatabaseModel.php:457 10 Joomla\CMS\MVC\Model\BaseDatabaseModel->getState() JROOT/components/com_content/models/article.php:251 9 ContentModelArticle->hit() JROOT/components/com_content/controller.php:113 8 ContentController->display() JROOT/libraries/src/MVC/Controller/BaseController.php:702 7 Joomla\CMS\MVC\Controller\BaseController->execute() JROOT/components/com_content/content.php:43 6 require_once JROOT/components/com_content/content.php JROOT/libraries/src/Component/ComponentHelper.php:402 5 Joomla\CMS\Component\ComponentHelper::executeComponent() JROOT/libraries/src/Component/ComponentHelper.php:377 4 Joomla\CMS\Component\ComponentHelper::renderComponent() JROOT/libraries/src/Application/SiteApplication.php:194 3 Joomla\CMS\Application\SiteApplication->dispatch() JROOT/libraries/src/Application/SiteApplication.php:233 2 Joomla\CMS\Application\SiteApplication->doExecute() JROOT/libraries/src/Application/CMSApplication.php:225 1 Joomla\CMS\Application\CMSApplication->execute() JROOT/index.php:46 - 查询时间：1.25 ms 最后一次查询之后：0.15 ms 查询内存： 0.031 MB 内存（查询 6.146 MB 之前） 返回排数：31
SHOW FULL COLUMNS
FROM `tbw0l_content`无法EXPLAIN（解释）的查询：SHOW FULL COLUMNS FROM `tbw0l_content`Status Duration starting 0.03 ms Executing hook on transaction 0.00 ms starting 0.03 ms checking permissions 0.00 ms checking permissions 0.00 ms Opening tables 0.35 ms init 0.01 ms System lock 0.01 ms optimizing 0.02 ms statistics 0.05 ms preparing 0.02 ms Creating tmp table 0.03 ms executing 0.04 ms checking permissions 0.06 ms checking permissions 0.02 ms checking permissions 0.02 ms checking permissions 0.01 ms checking permissions 0.01 ms checking permissions 0.01 ms checking permissions 0.02 ms checking permissions 0.01 ms checking permissions 0.02 ms checking permissions 0.01 ms checking permissions 0.01 ms checking permissions 0.01 ms checking permissions 0.01 ms checking permissions 0.01 ms checking permissions 0.01 ms checking permissions 0.01 ms checking permissions 0.01 ms checking permissions 0.02 ms checking permissions 0.01 ms checking permissions 0.01 ms checking permissions 0.01 ms checking permissions 0.01 ms checking permissions 0.01 ms checking permissions 0.01 ms checking permissions 0.01 ms checking permissions 0.01 ms checking permissions 0.01 ms checking permissions 0.01 ms checking permissions 0.01 ms checking permissions 0.01 ms checking permissions 0.01 ms checking permissions 0.01 ms checking permissions 0.05 ms end 0.00 ms query end 0.00 ms waiting for handler commit 0.01 ms closing tables 0.02 ms freeing items 0.03 ms cleaning up 0.01 ms # Caller File and line number 16 JDatabaseDriverMysqli->execute() JROOT/libraries/joomla/database/driver.php:1701 15 JDatabaseDriver->loadObjectList() JROOT/libraries/joomla/database/driver/mysqli.php:448 14 JDatabaseDriverMysqli->getTableColumns() JROOT/libraries/src/Table/Table.php:261 13 Joomla\CMS\Table\Table->getFields() JROOT/libraries/src/Table/Table.php:180 12 Joomla\CMS\Table\Table->__construct() JROOT/libraries/src/Table/Content.php:39 11 Joomla\CMS\Table\Content->__construct() JROOT/libraries/src/Table/Table.php:328 10 Joomla\CMS\Table\Table::getInstance() JROOT/components/com_content/models/article.php:253 9 ContentModelArticle->hit() JROOT/components/com_content/controller.php:113 8 ContentController->display() JROOT/libraries/src/MVC/Controller/BaseController.php:702 7 Joomla\CMS\MVC\Controller\BaseController->execute() JROOT/components/com_content/content.php:43 6 require_once JROOT/components/com_content/content.php JROOT/libraries/src/Component/ComponentHelper.php:402 5 Joomla\CMS\Component\ComponentHelper::executeComponent() JROOT/libraries/src/Component/ComponentHelper.php:377 4 Joomla\CMS\Component\ComponentHelper::renderComponent() JROOT/libraries/src/Application/SiteApplication.php:194 3 Joomla\CMS\Application\SiteApplication->dispatch() JROOT/libraries/src/Application/SiteApplication.php:233 2 Joomla\CMS\Application\SiteApplication->doExecute() JROOT/libraries/src/Application/CMSApplication.php:225 1 Joomla\CMS\Application\CMSApplication->execute() JROOT/index.php:46 - 查询时间：2.34 ms 最后一次查询之后：0.48 ms 查询内存： 0.005 MB 内存（查询 6.206 MB 之前）
UPDATE tbw0l_content
SET `hits` = (`hits` + 1)
WHERE `id` = '1046'无法EXPLAIN（解释）的查询：UPDATE tbw0l_content SET `hits` = (`hits` + 1) WHERE `id` = '1046'Status Duration starting 0.03 ms Executing hook on transaction 0.00 ms starting 0.00 ms checking permissions 0.00 ms Opening tables 0.02 ms init 0.00 ms System lock 0.04 ms updating 0.05 ms end 0.00 ms query end 0.00 ms waiting for handler commit 2.11 ms closing tables 0.01 ms freeing items 0.02 ms cleaning up 0.01 ms # Caller File and line number 11 JDatabaseDriverMysqli->execute() JROOT/libraries/src/Table/Table.php:1264 10 Joomla\CMS\Table\Table->hit() JROOT/components/com_content/models/article.php:254 9 ContentModelArticle->hit() JROOT/components/com_content/controller.php:113 8 ContentController->display() JROOT/libraries/src/MVC/Controller/BaseController.php:702 7 Joomla\CMS\MVC\Controller\BaseController->execute() JROOT/components/com_content/content.php:43 6 require_once JROOT/components/com_content/content.php JROOT/libraries/src/Component/ComponentHelper.php:402 5 Joomla\CMS\Component\ComponentHelper::executeComponent() JROOT/libraries/src/Component/ComponentHelper.php:377 4 Joomla\CMS\Component\ComponentHelper::renderComponent() JROOT/libraries/src/Application/SiteApplication.php:194 3 Joomla\CMS\Application\SiteApplication->dispatch() JROOT/libraries/src/Application/SiteApplication.php:233 2 Joomla\CMS\Application\SiteApplication->doExecute() JROOT/libraries/src/Application/CMSApplication.php:225 1 Joomla\CMS\Application\CMSApplication->execute() JROOT/index.php:46 - 查询时间：0.17 ms 最后一次查询之后：0.38 ms 查询内存： 0.025 MB 内存（查询 6.305 MB 之前） 返回排数：0
SELECT *
FROM tbw0l_assets
WHERE `name` = 'com_content.article.1046'id select_type table partitions type possible_keys key key_len ref rows filtered Extra 1 SIMPLE NULL NULL NULL NULL 没有可使用的索引键 NULL NULL NULL NULL no matching row in const table Status Duration starting 0.03 ms Executing hook on transaction 0.00 ms starting 0.00 ms checking permissions 0.00 ms Opening tables 0.02 ms init 0.00 ms System lock 0.00 ms optimizing 0.01 ms statistics 0.03 ms executing 0.01 ms end 0.00 ms query end 0.00 ms waiting for handler commit 0.01 ms closing tables 0.00 ms freeing items 0.01 ms cleaning up 0.01 ms # Caller File and line number 21 JDatabaseDriverMysqli->execute() JROOT/libraries/joomla/database/driver.php:1465 20 JDatabaseDriver->loadAssoc() JROOT/libraries/src/Table/Table.php:747 19 Joomla\CMS\Table\Table->load() JROOT/libraries/src/Access/Access.php:784 18 Joomla\CMS\Access\Access::getAssetId() JROOT/libraries/src/Access/Access.php:544 17 Joomla\CMS\Access\Access::getAssetRules() JROOT/libraries/src/Access/Access.php:183 16 Joomla\CMS\Access\Access::check() JROOT/libraries/src/User/User.php:398 15 Joomla\CMS\User\User->authorise() JROOT/components/com_content/models/article.php:58 14 ContentModelArticle->populateState() JROOT/libraries/src/MVC/Model/BaseDatabaseModel.php:457 13 Joomla\CMS\MVC\Model\BaseDatabaseModel->getState() JROOT/components/com_content/models/article.php:78 12 ContentModelArticle->getItem() JROOT/libraries/src/MVC/View/HtmlView.php:425 11 Joomla\CMS\MVC\View\HtmlView->get() JROOT/components/com_content/views/article/view.html.php:42 10 ContentViewArticle->display() JROOT/libraries/src/MVC/Controller/BaseController.php:664 9 Joomla\CMS\MVC\Controller\BaseController->display() JROOT/components/com_content/controller.php:118 8 ContentController->display() JROOT/libraries/src/MVC/Controller/BaseController.php:702 7 Joomla\CMS\MVC\Controller\BaseController->execute() JROOT/components/com_content/content.php:43 6 require_once JROOT/components/com_content/content.php JROOT/libraries/src/Component/ComponentHelper.php:402 5 Joomla\CMS\Component\ComponentHelper::executeComponent() JROOT/libraries/src/Component/ComponentHelper.php:377 4 Joomla\CMS\Component\ComponentHelper::renderComponent() JROOT/libraries/src/Application/SiteApplication.php:194 3 Joomla\CMS\Application\SiteApplication->dispatch() JROOT/libraries/src/Application/SiteApplication.php:233 2 Joomla\CMS\Application\SiteApplication->doExecute() JROOT/libraries/src/Application/CMSApplication.php:225 1 Joomla\CMS\Application\CMSApplication->execute() JROOT/index.php:46 - 查询时间：0.14 ms 最后一次查询之后：0.11 ms 查询内存： 0.025 MB 内存（查询 6.315 MB 之前） 返回排数：0
SELECT *
FROM tbw0l_assets
WHERE `name` = 'com_content.article.1046'id select_type table partitions type possible_keys key key_len ref rows filtered Extra 1 SIMPLE NULL NULL NULL NULL 没有可使用的索引键 NULL NULL NULL NULL no matching row in const table Status Duration starting 0.02 ms Executing hook on transaction 0.00 ms starting 0.00 ms checking permissions 0.00 ms Opening tables 0.01 ms init 0.00 ms System lock 0.00 ms optimizing 0.01 ms statistics 0.02 ms executing 0.01 ms end 0.00 ms query end 0.00 ms waiting for handler commit 0.00 ms closing tables 0.00 ms freeing items 0.01 ms cleaning up 0.01 ms # Caller File and line number 21 JDatabaseDriverMysqli->execute() JROOT/libraries/joomla/database/driver.php:1465 20 JDatabaseDriver->loadAssoc() JROOT/libraries/src/Table/Table.php:747 19 Joomla\CMS\Table\Table->load() JROOT/libraries/src/Access/Access.php:784 18 Joomla\CMS\Access\Access::getAssetId() JROOT/libraries/src/Access/Access.php:544 17 Joomla\CMS\Access\Access::getAssetRules() JROOT/libraries/src/Access/Access.php:183 16 Joomla\CMS\Access\Access::check() JROOT/libraries/src/User/User.php:398 15 Joomla\CMS\User\User->authorise() JROOT/components/com_content/models/article.php:58 14 ContentModelArticle->populateState() JROOT/libraries/src/MVC/Model/BaseDatabaseModel.php:457 13 Joomla\CMS\MVC\Model\BaseDatabaseModel->getState() JROOT/components/com_content/models/article.php:78 12 ContentModelArticle->getItem() JROOT/libraries/src/MVC/View/HtmlView.php:425 11 Joomla\CMS\MVC\View\HtmlView->get() JROOT/components/com_content/views/article/view.html.php:42 10 ContentViewArticle->display() JROOT/libraries/src/MVC/Controller/BaseController.php:664 9 Joomla\CMS\MVC\Controller\BaseController->display() JROOT/components/com_content/controller.php:118 8 ContentController->display() JROOT/libraries/src/MVC/Controller/BaseController.php:702 7 Joomla\CMS\MVC\Controller\BaseController->execute() JROOT/components/com_content/content.php:43 6 require_once JROOT/components/com_content/content.php JROOT/libraries/src/Component/ComponentHelper.php:402 5 Joomla\CMS\Component\ComponentHelper::executeComponent() JROOT/libraries/src/Component/ComponentHelper.php:377 4 Joomla\CMS\Component\ComponentHelper::renderComponent() JROOT/libraries/src/Application/SiteApplication.php:194 3 Joomla\CMS\Application\SiteApplication->dispatch() JROOT/libraries/src/Application/SiteApplication.php:233 2 Joomla\CMS\Application\SiteApplication->doExecute() JROOT/libraries/src/Application/CMSApplication.php:225 1 Joomla\CMS\Application\CMSApplication->execute() JROOT/index.php:46 - 查询时间：0.14 ms 最后一次查询之后：0.10 ms 查询内存： 0.025 MB 内存（查询 6.330 MB 之前） 返回排数：0
SELECT *
FROM tbw0l_assets
WHERE `name` = 'com_content.article.1046'id select_type table partitions type possible_keys key key_len ref rows filtered Extra 1 SIMPLE NULL NULL NULL NULL 没有可使用的索引键 NULL NULL NULL NULL no matching row in const table Status Duration starting 0.02 ms Executing hook on transaction 0.00 ms starting 0.00 ms checking permissions 0.00 ms Opening tables 0.01 ms init 0.00 ms System lock 0.00 ms optimizing 0.00 ms statistics 0.02 ms executing 0.01 ms end 0.00 ms query end 0.00 ms waiting for handler commit 0.00 ms closing tables 0.00 ms freeing items 0.01 ms cleaning up 0.00 ms # Caller File and line number 19 JDatabaseDriverMysqli->execute() JROOT/libraries/joomla/database/driver.php:1465 18 JDatabaseDriver->loadAssoc() JROOT/libraries/src/Table/Table.php:747 17 Joomla\CMS\Table\Table->load() JROOT/libraries/src/Access/Access.php:784 16 Joomla\CMS\Access\Access::getAssetId() JROOT/libraries/src/Access/Access.php:544 15 Joomla\CMS\Access\Access::getAssetRules() JROOT/libraries/src/Access/Access.php:183 14 Joomla\CMS\Access\Access::check() JROOT/libraries/src/User/User.php:398 13 Joomla\CMS\User\User->authorise() JROOT/components/com_content/models/article.php:128 12 ContentModelArticle->getItem() JROOT/libraries/src/MVC/View/HtmlView.php:425 11 Joomla\CMS\MVC\View\HtmlView->get() JROOT/components/com_content/views/article/view.html.php:42 10 ContentViewArticle->display() JROOT/libraries/src/MVC/Controller/BaseController.php:664 9 Joomla\CMS\MVC\Controller\BaseController->display() JROOT/components/com_content/controller.php:118 8 ContentController->display() JROOT/libraries/src/MVC/Controller/BaseController.php:702 7 Joomla\CMS\MVC\Controller\BaseController->execute() JROOT/components/com_content/content.php:43 6 require_once JROOT/components/com_content/content.php JROOT/libraries/src/Component/ComponentHelper.php:402 5 Joomla\CMS\Component\ComponentHelper::executeComponent() JROOT/libraries/src/Component/ComponentHelper.php:377 4 Joomla\CMS\Component\ComponentHelper::renderComponent() JROOT/libraries/src/Application/SiteApplication.php:194 3 Joomla\CMS\Application\SiteApplication->dispatch() JROOT/libraries/src/Application/SiteApplication.php:233 2 Joomla\CMS\Application\SiteApplication->doExecute() JROOT/libraries/src/Application/CMSApplication.php:225 1 Joomla\CMS\Application\CMSApplication->execute() JROOT/index.php:46 - 查询时间：0.13 ms 最后一次查询之后：0.13 ms 查询内存： 0.025 MB 内存（查询 6.338 MB 之前） 返回排数：0
SELECT *
FROM tbw0l_assets
WHERE `name` = 'com_content.article.1046'id select_type table partitions type possible_keys key key_len ref rows filtered Extra 1 SIMPLE NULL NULL NULL NULL 没有可使用的索引键 NULL NULL NULL NULL no matching row in const table Status Duration starting 0.02 ms Executing hook on transaction 0.00 ms starting 0.00 ms checking permissions 0.00 ms Opening tables 0.01 ms init 0.00 ms System lock 0.00 ms optimizing 0.01 ms statistics 0.02 ms executing 0.01 ms end 0.00 ms query end 0.00 ms waiting for handler commit 0.00 ms closing tables 0.00 ms freeing items 0.02 ms cleaning up 0.00 ms # Caller File and line number 19 JDatabaseDriverMysqli->execute() JROOT/libraries/joomla/database/driver.php:1465 18 JDatabaseDriver->loadAssoc() JROOT/libraries/src/Table/Table.php:747 17 Joomla\CMS\Table\Table->load() JROOT/libraries/src/Access/Access.php:784 16 Joomla\CMS\Access\Access::getAssetId() JROOT/libraries/src/Access/Access.php:544 15 Joomla\CMS\Access\Access::getAssetRules() JROOT/libraries/src/Access/Access.php:183 14 Joomla\CMS\Access\Access::check() JROOT/libraries/src/User/User.php:398 13 Joomla\CMS\User\User->authorise() JROOT/components/com_content/models/article.php:128 12 ContentModelArticle->getItem() JROOT/libraries/src/MVC/View/HtmlView.php:425 11 Joomla\CMS\MVC\View\HtmlView->get() JROOT/components/com_content/views/article/view.html.php:42 10 ContentViewArticle->display() JROOT/libraries/src/MVC/Controller/BaseController.php:664 9 Joomla\CMS\MVC\Controller\BaseController->display() JROOT/components/com_content/controller.php:118 8 ContentController->display() JROOT/libraries/src/MVC/Controller/BaseController.php:702 7 Joomla\CMS\MVC\Controller\BaseController->execute() JROOT/components/com_content/content.php:43 6 require_once JROOT/components/com_content/content.php JROOT/libraries/src/Component/ComponentHelper.php:402 5 Joomla\CMS\Component\ComponentHelper::executeComponent() JROOT/libraries/src/Component/ComponentHelper.php:377 4 Joomla\CMS\Component\ComponentHelper::renderComponent() JROOT/libraries/src/Application/SiteApplication.php:194 3 Joomla\CMS\Application\SiteApplication->dispatch() JROOT/libraries/src/Application/SiteApplication.php:233 2 Joomla\CMS\Application\SiteApplication->doExecute() JROOT/libraries/src/Application/CMSApplication.php:225 1 Joomla\CMS\Application\CMSApplication->execute() JROOT/index.php:46 - 查询时间：0.42 ms 最后一次查询之后：0.10 ms 查询内存： 0.039 MB 内存（查询 6.268 MB 之前） 返回排数：1
SELECT a.id, a.asset_id, a.title, a.alias, a.introtext, a.fulltext, a.state, a.catid, a.created, a.created_by, a.created_by_alias,
CASE WHEN a.modified = '0000-00-00 00:00:00' THEN a.created ELSE a.modified END as modified, a.modified_by, a.checked_out, a.checked_out_time, a.publish_up, a.publish_down, a.images, a.urls, a.attribs, a.version, a.ordering, a.metakey, a.metadesc, a.access, a.hits, a.metadata, a.featured, a.language, a.xreference,c.title AS category_title, c.alias AS category_alias, c.access AS category_access,u.name AS author,parent.title as parent_title, parent.id as parent_id, parent.path as parent_route, parent.alias as parent_alias,ROUND(v.rating_sum / v.rating_count, 0) AS rating, v.rating_count as rating_count
FROM tbw0l_content AS a
INNER JOIN tbw0l_categories AS c
on c.id = a.catid
LEFT JOIN tbw0l_users AS u
on u.id = a.created_by
LEFT JOIN tbw0l_categories as parent
ON parent.id = c.parent_id
LEFT JOIN tbw0l_content_rating AS v
ON a.id = v.content_id
WHERE a.id = 1046
AND c.published > 0
AND a.language in ('zh-CN','*')
AND (a.publish_up = '0000-00-00 00:00:00' OR a.publish_up <= '2026-09-30 08:19:20')
AND (a.publish_down = '0000-00-00 00:00:00' OR a.publish_down >= '2026-09-30 08:19:20')
AND (a.state = 1 OR a.state =2)id select_type table partitions type possible_keys key key_len ref rows filtered Extra 1 SIMPLE a NULL const PRIMARY,idx_state,idx_catid,idx_language PRIMARY 4 const 1 100.00 NULL 1 SIMPLE c NULL const PRIMARY PRIMARY 4 const 1 100.00 NULL 1 SIMPLE u NULL const PRIMARY PRIMARY 4 const 0 0.00 unique row not found 1 SIMPLE parent NULL const PRIMARY PRIMARY 4 const 1 100.00 NULL 1 SIMPLE v NULL const PRIMARY PRIMARY 4 const 0 0.00 unique row not found Status Duration starting 0.09 ms Executing hook on transaction 0.00 ms starting 0.00 ms checking permissions 0.00 ms checking permissions 0.00 ms checking permissions 0.00 ms checking permissions 0.00 ms checking permissions 0.00 ms Opening tables 0.06 ms init 0.00 ms System lock 0.01 ms optimizing 0.02 ms statistics 0.09 ms preparing 0.01 ms executing 0.02 ms end 0.00 ms query end 0.00 ms waiting for handler commit 0.01 ms closing tables 0.01 ms freeing items 0.03 ms cleaning up 0.01 ms # Caller File and line number 14 JDatabaseDriverMysqli->execute() JROOT/libraries/joomla/database/driver.php:1662 13 JDatabaseDriver->loadObject() JROOT/components/com_content/models/article.php:151 12 ContentModelArticle->getItem() JROOT/libraries/src/MVC/View/HtmlView.php:425 11 Joomla\CMS\MVC\View\HtmlView->get() JROOT/components/com_content/views/article/view.html.php:42 10 ContentViewArticle->display() JROOT/libraries/src/MVC/Controller/BaseController.php:664 9 Joomla\CMS\MVC\Controller\BaseController->display() JROOT/components/com_content/controller.php:118 8 ContentController->display() JROOT/libraries/src/MVC/Controller/BaseController.php:702 7 Joomla\CMS\MVC\Controller\BaseController->execute() JROOT/components/com_content/content.php:43 6 require_once JROOT/components/com_content/content.php JROOT/libraries/src/Component/ComponentHelper.php:402 5 Joomla\CMS\Component\ComponentHelper::executeComponent() JROOT/libraries/src/Component/ComponentHelper.php:377 4 Joomla\CMS\Component\ComponentHelper::renderComponent() JROOT/libraries/src/Application/SiteApplication.php:194 3 Joomla\CMS\Application\SiteApplication->dispatch() JROOT/libraries/src/Application/SiteApplication.php:233 2 Joomla\CMS\Application\SiteApplication->doExecute() JROOT/libraries/src/Application/CMSApplication.php:225 1 Joomla\CMS\Application\CMSApplication->execute() JROOT/index.php:46 - 查询时间：0.56 ms 最后一次查询之后：1.33 ms 查询内存： 0.027 MB 内存（查询 6.415 MB 之前） 返回排数：2
SELECT c.id, c.asset_id, c.access, c.alias, c.checked_out, c.checked_out_time, c.created_time, c.created_user_id, c.description, c.extension, c.hits, c.language, c.level, c.lft, c.metadata, c.metadesc, c.metakey, c.modified_time, c.note, c.params, c.parent_id, c.path, c.published, c.rgt, c.title, c.modified_user_id, c.version,
CASE WHEN CHAR_LENGTH(c.alias) != 0 THEN CONCAT_WS(':', c.id, c.alias) ELSE c.id END as slug
FROM `tbw0l_categories` AS `s`
INNER JOIN `tbw0l_categories` AS `c`
ON (s.lft < c.lft
AND c.lft < s.rgt
AND c.language IN ('zh-CN','*')) OR (c.lft <= s.lft
AND s.rgt <= c.rgt)
WHERE (c.extension='com_content' OR c.extension='system')
AND c.access IN (1,1,5)
AND c.published = 1
AND s.id = 23
ORDER BY c.lftid select_type table partitions type possible_keys key key_len ref rows filtered Extra 1 SIMPLE s NULL const PRIMARY,idx_left_right PRIMARY 4 const 1 100.00 使用filesort算法 1 SIMPLE c NULL range cat_idx,idx_access,idx_left_right,idx_language cat_idx 207 NULL 9 44.72 Using index condition; Using where Status Duration starting 0.09 ms Executing hook on transaction 0.00 ms starting 0.03 ms checking permissions 0.00 ms checking permissions 0.00 ms Opening tables 0.04 ms init 0.00 ms System lock 0.01 ms optimizing 0.02 ms statistics 0.11 ms preparing 0.03 ms executing 0.08 ms end 0.00 ms query end 0.00 ms waiting for handler commit 0.01 ms closing tables 0.01 ms freeing items 0.02 ms cleaning up 0.01 ms # Caller File and line number 24 JDatabaseDriverMysqli->execute() JROOT/libraries/joomla/database/driver.php:1701 23 JDatabaseDriver->loadObjectList() JROOT/libraries/src/Categories/Categories.php:324 22 Joomla\CMS\Categories\Categories->_load() JROOT/libraries/src/Categories/Categories.php:184 21 Joomla\CMS\Categories\Categories->get() JROOT/components/com_content/router.php:72 20 ContentRouter->getCategorySegment() Same as call in the line below. 19 call_user_func_array() JROOT/libraries/src/Component/Router/RouterView.php:120 18 Joomla\CMS\Component\Router\RouterView->getPath() JROOT/libraries/src/Component/Router/Rules/MenuRules.php:111 17 Joomla\CMS\Component\Router\Rules\MenuRules->preprocess() JROOT/libraries/src/Component/Router/RouterView.php:222 16 Joomla\CMS\Component\Router\RouterView->preprocess() JROOT/libraries/src/Router/SiteRouter.php:676 15 Joomla\CMS\Router\SiteRouter->processBuildRules() JROOT/libraries/src/Router/Router.php:266 14 Joomla\CMS\Router\Router->build() JROOT/libraries/src/Router/SiteRouter.php:155 13 Joomla\CMS\Router\SiteRouter->build() JROOT/libraries/src/Router/Route.php:144 12 Joomla\CMS\Router\Route::link() JROOT/libraries/src/Router/Route.php:93 11 Joomla\CMS\Router\Route::_() JROOT/components/com_content/views/article/view.html.php:71 10 ContentViewArticle->display() JROOT/libraries/src/MVC/Controller/BaseController.php:664 9 Joomla\CMS\MVC\Controller\BaseController->display() JROOT/components/com_content/controller.php:118 8 ContentController->display() JROOT/libraries/src/MVC/Controller/BaseController.php:702 7 Joomla\CMS\MVC\Controller\BaseController->execute() JROOT/components/com_content/content.php:43 6 require_once JROOT/components/com_content/content.php JROOT/libraries/src/Component/ComponentHelper.php:402 5 Joomla\CMS\Component\ComponentHelper::executeComponent() JROOT/libraries/src/Component/ComponentHelper.php:377 4 Joomla\CMS\Component\ComponentHelper::renderComponent() JROOT/libraries/src/Application/SiteApplication.php:194 3 Joomla\CMS\Application\SiteApplication->dispatch() JROOT/libraries/src/Application/SiteApplication.php:233 2 Joomla\CMS\Application\SiteApplication->doExecute() JROOT/libraries/src/Application/CMSApplication.php:225 1 Joomla\CMS\Application\CMSApplication->execute() JROOT/index.php:46 - 查询时间：0.29 ms 最后一次查询之后：0.34 ms 查询内存： 0.022 MB 内存（查询 6.448 MB 之前） 返回排数：0
SELECT `m`.`tag_id`,`t`.*
FROM `tbw0l_contentitem_tag_map` AS m
INNER JOIN `tbw0l_tags` AS t
ON `m`.`tag_id` = `t`.`id`
WHERE `m`.`type_alias` = 'com_content.article'
AND `m`.`content_item_id` = 1046
AND `t`.`published` = 1
AND t.access IN (1,1,5)id select_type table partitions type possible_keys key key_len ref rows filtered Extra 1 SIMPLE m NULL ALL idx_tag_type 没有可使用的索引键 NULL NULL 4 25.00 Using where 1 SIMPLE t NULL eq_ref PRIMARY,tag_idx,idx_access PRIMARY 4 cn_navicat_com_20230208.m.tag_id 1 100.00 Using where Status Duration starting 0.04 ms Executing hook on transaction 0.00 ms starting 0.00 ms checking permissions 0.00 ms checking permissions 0.00 ms Opening tables 0.03 ms init 0.00 ms System lock 0.01 ms optimizing 0.01 ms statistics 0.05 ms preparing 0.01 ms executing 0.02 ms end 0.00 ms query end 0.00 ms waiting for handler commit 0.01 ms closing tables 0.03 ms freeing items 0.01 ms cleaning up 0.01 ms # Caller File and line number 13 JDatabaseDriverMysqli->execute() JROOT/libraries/joomla/database/driver.php:1701 12 JDatabaseDriver->loadObjectList() JROOT/libraries/src/Helper/TagsHelper.php:454 11 Joomla\CMS\Helper\TagsHelper->getItemTags() JROOT/components/com_content/views/article/view.html.php:184 10 ContentViewArticle->display() JROOT/libraries/src/MVC/Controller/BaseController.php:664 9 Joomla\CMS\MVC\Controller\BaseController->display() JROOT/components/com_content/controller.php:118 8 ContentController->display() JROOT/libraries/src/MVC/Controller/BaseController.php:702 7 Joomla\CMS\MVC\Controller\BaseController->execute() JROOT/components/com_content/content.php:43 6 require_once JROOT/components/com_content/content.php JROOT/libraries/src/Component/ComponentHelper.php:402 5 Joomla\CMS\Component\ComponentHelper::executeComponent() JROOT/libraries/src/Component/ComponentHelper.php:377 4 Joomla\CMS\Component\ComponentHelper::renderComponent() JROOT/libraries/src/Application/SiteApplication.php:194 3 Joomla\CMS\Application\SiteApplication->dispatch() JROOT/libraries/src/Application/SiteApplication.php:233 2 Joomla\CMS\Application\SiteApplication->doExecute() JROOT/libraries/src/Application/CMSApplication.php:225 1 Joomla\CMS\Application\CMSApplication->execute() JROOT/index.php:46 - 查询时间：0.68 ms 最后一次查询之后：0.93 ms 查询内存： 0.026 MB 内存（查询 6.516 MB 之前） 返回排数：0
SELECT DISTINCT a.id, a.title, a.name, a.checked_out, a.checked_out_time, a.note, a.state, a.access, a.created_time, a.created_user_id, a.ordering, a.language, a.fieldparams, a.params, a.type, a.default_value, a.context, a.group_id, a.label, a.description, a.required,l.title AS language_title, l.image AS language_image,uc.name AS editor,ag.title AS access_level,ua.name AS author_name,g.title AS group_title, g.access as group_access, g.state AS group_state, g.note as group_note
FROM tbw0l_fields AS a
LEFT JOIN `tbw0l_languages` AS l
ON l.lang_code = a.language
LEFT JOIN tbw0l_users AS uc
ON uc.id=a.checked_out
LEFT JOIN tbw0l_viewlevels AS ag
ON ag.id = a.access
LEFT JOIN tbw0l_users AS ua
ON ua.id = a.created_user_id
LEFT JOIN tbw0l_fields_groups AS g
ON g.id = a.group_id
LEFT JOIN `tbw0l_fields_categories` AS fc
ON fc.field_id = a.id
WHERE a.context = 'com_content.article'
AND (fc.category_id IS NULL OR fc.category_id IN (23,0))
AND a.access IN (1,1,5)
AND (a.group_id = 0 OR g.access IN (1,1,5))
AND a.state = 1
AND (a.group_id = 0 OR g.state = 1)
ORDER BY a.ordering ASCid select_type table partitions type possible_keys key key_len ref rows filtered Extra 1 SIMPLE a NULL ref idx_state,idx_access,idx_context idx_state 1 const 1 100.00 Using where; Using temporary; 使用filesort算法 1 SIMPLE l NULL eq_ref idx_langcode idx_langcode 28 cn_navicat_com_20230208.a.language 1 100.00 Using index condition 1 SIMPLE uc NULL eq_ref PRIMARY PRIMARY 4 cn_navicat_com_20230208.a.checked_out 1 100.00 NULL 1 SIMPLE ag NULL eq_ref PRIMARY PRIMARY 4 cn_navicat_com_20230208.a.access 1 100.00 Using where 1 SIMPLE ua NULL eq_ref PRIMARY PRIMARY 4 cn_navicat_com_20230208.a.created_user_id 1 100.00 Using where 1 SIMPLE g NULL eq_ref PRIMARY PRIMARY 4 cn_navicat_com_20230208.a.group_id 1 100.00 Using where 1 SIMPLE fc NULL ref PRIMARY PRIMARY 4 cn_navicat_com_20230208.a.id 1 100.00 Using where; Using index; Distinct Status Duration starting 0.13 ms Executing hook on transaction 0.01 ms starting 0.01 ms checking permissions 0.00 ms checking permissions 0.00 ms checking permissions 0.00 ms checking permissions 0.00 ms checking permissions 0.00 ms checking permissions 0.00 ms checking permissions 0.00 ms Opening tables 0.07 ms init 0.01 ms System lock 0.01 ms optimizing 0.02 ms statistics 0.12 ms preparing 0.03 ms Creating tmp table 0.06 ms executing 0.06 ms end 0.00 ms query end 0.00 ms waiting for handler commit 0.01 ms closing tables 0.01 ms freeing items 0.03 ms cleaning up 0.01 ms # Caller File and line number 19 JDatabaseDriverMysqli->execute() JROOT/libraries/joomla/database/driver.php:1701 18 JDatabaseDriver->loadObjectList() JROOT/libraries/src/MVC/Model/BaseDatabaseModel.php:322 17 Joomla\CMS\MVC\Model\BaseDatabaseModel->_getList() JROOT/administrator/components/com_fields/models/fields.php:333 16 FieldsModelFields->_getList() JROOT/libraries/src/MVC/Model/ListModel.php:194 15 Joomla\CMS\MVC\Model\ListModel->getItems() JROOT/administrator/components/com_fields/helpers/fields.php:136 14 FieldsHelper::getFields() JROOT/plugins/system/fields/fields.php:495 13 PlgSystemFields->onContentPrepare() JROOT/libraries/joomla/event/event.php:70 12 JEvent->update() JROOT/libraries/joomla/event/dispatcher.php:160 11 JEventDispatcher->trigger() JROOT/components/com_content/views/article/view.html.php:193 10 ContentViewArticle->display() JROOT/libraries/src/MVC/Controller/BaseController.php:664 9 Joomla\CMS\MVC\Controller\BaseController->display() JROOT/components/com_content/controller.php:118 8 ContentController->display() JROOT/libraries/src/MVC/Controller/BaseController.php:702 7 Joomla\CMS\MVC\Controller\BaseController->execute() JROOT/components/com_content/content.php:43 6 require_once JROOT/components/com_content/content.php JROOT/libraries/src/Component/ComponentHelper.php:402 5 Joomla\CMS\Component\ComponentHelper::executeComponent() JROOT/libraries/src/Component/ComponentHelper.php:377 4 Joomla\CMS\Component\ComponentHelper::renderComponent() JROOT/libraries/src/Application/SiteApplication.php:194 3 Joomla\CMS\Application\SiteApplication->dispatch() JROOT/libraries/src/Application/SiteApplication.php:233 2 Joomla\CMS\Application\SiteApplication->doExecute() JROOT/libraries/src/Application/CMSApplication.php:225 1 Joomla\CMS\Application\CMSApplication->execute() JROOT/index.php:46 - 查询时间：1.35 ms 最后一次查询之后：1.66 ms 查询内存： 0.021 MB 内存（查询 6.620 MB 之前） 返回排数：2
SELECT language,id
FROM `tbw0l_menu`
WHERE home = 1
AND published = 1
AND client_id = 0id select_type table partitions type possible_keys key key_len ref rows filtered Extra 1 SIMPLE tbw0l_menu NULL ref idx_client_id_parent_id_alias_language idx_client_id_parent_id_alias_language 1 const 779 1.00 Using where Status Duration starting 0.03 ms Executing hook on transaction 0.00 ms starting 0.00 ms checking permissions 0.00 ms Opening tables 0.02 ms init 0.00 ms System lock 0.00 ms optimizing 0.01 ms statistics 0.04 ms preparing 0.01 ms executing 1.14 ms end 0.01 ms query end 0.00 ms waiting for handler commit 0.01 ms closing tables 0.01 ms freeing items 0.01 ms cleaning up 0.01 ms # Caller File and line number 10 JDatabaseDriverMysqli->execute() JROOT/libraries/joomla/database/driver.php:1701 9 JDatabaseDriver->loadObjectList() JROOT/libraries/src/Language/Multilanguage.php:107 8 Joomla\CMS\Language\Multilanguage::getSiteHomePages() JROOT/plugins/system/languagefilter/languagefilter.php:751 7 PlgSystemLanguageFilter->onAfterDispatch() JROOT/libraries/joomla/event/event.php:70 6 JEvent->update() JROOT/libraries/joomla/event/dispatcher.php:160 5 JEventDispatcher->trigger() JROOT/libraries/src/Application/BaseApplication.php:108 4 Joomla\CMS\Application\BaseApplication->triggerEvent() JROOT/libraries/src/Application/SiteApplication.php:199 3 Joomla\CMS\Application\SiteApplication->dispatch() JROOT/libraries/src/Application/SiteApplication.php:233 2 Joomla\CMS\Application\SiteApplication->doExecute() JROOT/libraries/src/Application/CMSApplication.php:225 1 Joomla\CMS\Application\CMSApplication->execute() JROOT/index.php:46 - 查询时间：0.23 ms 最后一次查询之后：0.19 ms 查询内存： 0.024 MB 内存（查询 6.629 MB 之前） 返回排数：1
SELECT `alias`
FROM `tbw0l_content`
WHERE id = '1046'id select_type table partitions type possible_keys key key_len ref rows filtered Extra 1 SIMPLE tbw0l_content NULL const PRIMARY PRIMARY 4 const 1 100.00 NULL Status Duration starting 0.03 ms Executing hook on transaction 0.00 ms starting 0.00 ms checking permissions 0.01 ms Opening tables 0.02 ms init 0.00 ms System lock 0.01 ms optimizing 0.01 ms statistics 0.06 ms preparing 0.01 ms executing 0.01 ms end 0.00 ms query end 0.00 ms waiting for handler commit 0.01 ms closing tables 0.01 ms freeing items 0.02 ms cleaning up 0.02 ms # Caller File and line number 19 JDatabaseDriverMysqli->execute() JROOT/libraries/joomla/database/driver.php:1740 18 JDatabaseDriver->loadResult() JROOT/components/com_content/router.php:125 17 ContentRouter->getArticleSegment() Same as call in the line below. 16 call_user_func_array() JROOT/libraries/src/Component/Router/RouterView.php:120 15 Joomla\CMS\Component\Router\RouterView->getPath() JROOT/libraries/src/Component/Router/Rules/MenuRules.php:111 14 Joomla\CMS\Component\Router\Rules\MenuRules->preprocess() JROOT/libraries/src/Component/Router/RouterView.php:222 13 Joomla\CMS\Component\Router\RouterView->preprocess() JROOT/libraries/src/Router/SiteRouter.php:676 12 Joomla\CMS\Router\SiteRouter->processBuildRules() JROOT/libraries/src/Router/Router.php:266 11 Joomla\CMS\Router\Router->build() JROOT/libraries/src/Router/SiteRouter.php:155 10 Joomla\CMS\Router\SiteRouter->build() JROOT/libraries/src/Router/Route.php:144 9 Joomla\CMS\Router\Route::link() JROOT/libraries/src/Router/Route.php:93 8 Joomla\CMS\Router\Route::_() JROOT/plugins/system/languagefilter/languagefilter.php:763 7 PlgSystemLanguageFilter->onAfterDispatch() JROOT/libraries/joomla/event/event.php:70 6 JEvent->update() JROOT/libraries/joomla/event/dispatcher.php:160 5 JEventDispatcher->trigger() JROOT/libraries/src/Application/BaseApplication.php:108 4 Joomla\CMS\Application\BaseApplication->triggerEvent() JROOT/libraries/src/Application/SiteApplication.php:199 3 Joomla\CMS\Application\SiteApplication->dispatch() JROOT/libraries/src/Application/SiteApplication.php:233 2 Joomla\CMS\Application\SiteApplication->doExecute() JROOT/libraries/src/Application/CMSApplication.php:225 1 Joomla\CMS\Application\CMSApplication->execute() JROOT/index.php:46 - 查询时间：0.17 ms 最后一次查询之后：0.07 ms 查询内存： 0.024 MB 内存（查询 6.637 MB 之前） 返回排数：1
SELECT alias
FROM tbw0l_content
WHERE id=1046id select_type table partitions type possible_keys key key_len ref rows filtered Extra 1 SIMPLE tbw0l_content NULL const PRIMARY PRIMARY 4 const 1 100.00 NULL Status Duration starting 0.03 ms Executing hook on transaction 0.00 ms starting 0.00 ms checking permissions 0.00 ms Opening tables 0.01 ms init 0.00 ms System lock 0.01 ms optimizing 0.01 ms statistics 0.03 ms preparing 0.01 ms executing 0.01 ms end 0.00 ms query end 0.00 ms waiting for handler commit 0.01 ms closing tables 0.01 ms freeing items 0.02 ms cleaning up 0.01 ms # Caller File and line number 17 JDatabaseDriverMysqli->execute() JROOT/libraries/joomla/database/driver.php:1740 16 JDatabaseDriver->loadResult() JROOT/components/com_content/helpers/legacyrouter.php:140 15 ContentRouterRulesLegacy->build() JROOT/libraries/src/Component/Router/RouterView.php:244 14 Joomla\CMS\Component\Router\RouterView->build() JROOT/libraries/src/Router/SiteRouter.php:532 13 Joomla\CMS\Router\SiteRouter->buildSefRoute() JROOT/libraries/src/Router/SiteRouter.php:502 12 Joomla\CMS\Router\SiteRouter->_buildSefRoute() JROOT/libraries/src/Router/Router.php:281 11 Joomla\CMS\Router\Router->build() JROOT/libraries/src/Router/SiteRouter.php:155 10 Joomla\CMS\Router\SiteRouter->build() JROOT/libraries/src/Router/Route.php:144 9 Joomla\CMS\Router\Route::link() JROOT/libraries/src/Router/Route.php:93 8 Joomla\CMS\Router\Route::_() JROOT/plugins/system/languagefilter/languagefilter.php:763 7 PlgSystemLanguageFilter->onAfterDispatch() JROOT/libraries/joomla/event/event.php:70 6 JEvent->update() JROOT/libraries/joomla/event/dispatcher.php:160 5 JEventDispatcher->trigger() JROOT/libraries/src/Application/BaseApplication.php:108 4 Joomla\CMS\Application\BaseApplication->triggerEvent() JROOT/libraries/src/Application/SiteApplication.php:199 3 Joomla\CMS\Application\SiteApplication->dispatch() JROOT/libraries/src/Application/SiteApplication.php:233 2 Joomla\CMS\Application\SiteApplication->doExecute() JROOT/libraries/src/Application/CMSApplication.php:225 1 Joomla\CMS\Application\CMSApplication->execute() JROOT/index.php:46 - 查询时间：0.38 ms 最后一次查询之后：0.19 ms 查询内存： 0.021 MB 内存（查询 6.651 MB 之前） 返回排数：0
SELECT `c2`.`language`,CONCAT_WS(':', `c2`.`id`, `c2`.`alias`) AS `id`,CONCAT_WS(':', ca.id, ca.alias) AS `catid`
FROM `tbw0l_content` AS `c`
INNER JOIN `tbw0l_associations` AS `a`
ON a.id = c.`id`
AND a.context='com_content.item'
INNER JOIN `tbw0l_associations` AS `a2`
ON `a`.`key` = `a2`.`key`
INNER JOIN `tbw0l_content` AS `c2`
ON a2.id = c2.`id`
INNER JOIN `tbw0l_categories` AS `ca`
ON `c2`.`catid` = ca.id
AND ca.extension = 'com_content'
WHERE c.id = 1046
AND c2.access IN (1,1,5)
AND c2.language != 'zh-CN'
AND (c2.publish_up = '0000-00-00 00:00:00' OR c2.publish_up <= '2026-09-30 08:19:20')
AND (c2.publish_down = '0000-00-00 00:00:00' OR c2.publish_down >= '2026-09-30 08:19:20')
AND c2.state = 1id select_type table partitions type possible_keys key key_len ref rows filtered Extra 1 SIMPLE NULL NULL NULL NULL 没有可使用的索引键 NULL NULL NULL NULL no matching row in const table Status Duration starting 0.07 ms Executing hook on transaction 0.00 ms starting 0.00 ms checking permissions 0.00 ms checking permissions 0.00 ms checking permissions 0.00 ms checking permissions 0.00 ms checking permissions 0.00 ms Opening tables 0.05 ms init 0.00 ms System lock 0.01 ms optimizing 0.03 ms statistics 0.13 ms executing 0.01 ms end 0.00 ms query end 0.00 ms waiting for handler commit 0.01 ms closing tables 0.01 ms freeing items 0.02 ms cleaning up 0.01 ms # Caller File and line number 11 JDatabaseDriverMysqli->execute() JROOT/libraries/joomla/database/driver.php:1701 10 JDatabaseDriver->loadObjectList() JROOT/libraries/src/Language/Associations.php:115 9 Joomla\CMS\Language\Associations::getAssociations() JROOT/components/com_content/helpers/association.php:76 8 ContentHelperAssociation::getAssociations() JROOT/plugins/system/languagefilter/languagefilter.php:783 7 PlgSystemLanguageFilter->onAfterDispatch() JROOT/libraries/joomla/event/event.php:70 6 JEvent->update() JROOT/libraries/joomla/event/dispatcher.php:160 5 JEventDispatcher->trigger() JROOT/libraries/src/Application/BaseApplication.php:108 4 Joomla\CMS\Application\BaseApplication->triggerEvent() JROOT/libraries/src/Application/SiteApplication.php:199 3 Joomla\CMS\Application\SiteApplication->dispatch() JROOT/libraries/src/Application/SiteApplication.php:233 2 Joomla\CMS\Application\SiteApplication->doExecute() JROOT/libraries/src/Application/CMSApplication.php:225 1 Joomla\CMS\Application\CMSApplication->execute() JROOT/index.php:46 - 查询时间：1.44 ms 最后一次查询之后：0.86 ms 查询内存： 0.071 MB 内存（查询 6.688 MB 之前） 返回排数：17
SELECT m.id, m.title, m.module, m.position, m.content, m.showtitle, m.params, mm.menuid
FROM tbw0l_modules AS m
LEFT JOIN tbw0l_modules_menu AS mm
ON mm.moduleid = m.id
LEFT JOIN tbw0l_extensions AS e
ON e.element = m.module
AND e.client_id = m.client_id
WHERE m.published = 1
AND e.enabled = 1
AND (m.publish_up = '0000-00-00 00:00:00' OR m.publish_up <= '2026-09-30 08:19:20')
AND (m.publish_down = '0000-00-00 00:00:00' OR m.publish_down >= '2026-09-30 08:19:20')
AND m.access IN (1,1,5)
AND m.client_id = 0
AND (mm.menuid = 282 OR mm.menuid <= 0)
AND m.language IN ('zh-CN','*')
ORDER BY m.position, m.orderingid select_type table partitions type possible_keys key key_len ref rows filtered Extra 1 SIMPLE m NULL ALL PRIMARY,published,newsfeeds,idx_language 没有可使用的索引键 NULL NULL 122 1.03 Using where; 使用filesort算法 1 SIMPLE e NULL ref element_clientid,element_folder_clientid element_clientid 403 cn_navicat_com_20230208.m.module,const 1 10.00 Using index condition; Using where 1 SIMPLE mm NULL ref PRIMARY PRIMARY 4 cn_navicat_com_20230208.m.id 7 40.00 Using where; Using index Status Duration starting 0.06 ms Executing hook on transaction 0.00 ms starting 0.00 ms checking permissions 0.00 ms checking permissions 0.00 ms checking permissions 0.00 ms Opening tables 0.04 ms init 0.00 ms System lock 0.01 ms optimizing 0.02 ms statistics 0.09 ms preparing 0.03 ms executing 1.07 ms end 0.01 ms query end 0.00 ms waiting for handler commit 0.01 ms closing tables 0.01 ms freeing items 0.02 ms cleaning up 0.01 ms # Caller File and line number 14 JDatabaseDriverMysqli->execute() JROOT/libraries/joomla/database/driver.php:1701 13 JDatabaseDriver->loadObjectList() Same as call in the line below. 12 call_user_func_array() JROOT/libraries/src/Cache/Controller/CallbackController.php:173 11 Joomla\CMS\Cache\Controller\CallbackController->get() JROOT/libraries/src/Helper/ModuleHelper.php:441 10 Joomla\CMS\Helper\ModuleHelper::getModuleList() JROOT/libraries/src/Helper/ModuleHelper.php:371 9 Joomla\CMS\Helper\ModuleHelper::load() JROOT/libraries/src/Helper/ModuleHelper.php:87 8 Joomla\CMS\Helper\ModuleHelper::getModules() JROOT/libraries/src/Document/Renderer/Html/ModulesRenderer.php:45 7 Joomla\CMS\Document\Renderer\Html\ModulesRenderer->render() JROOT/libraries/src/Document/HtmlDocument.php:511 6 Joomla\CMS\Document\HtmlDocument->getBuffer() JROOT/libraries/src/Document/HtmlDocument.php:803 5 Joomla\CMS\Document\HtmlDocument->_renderTemplate() JROOT/libraries/src/Document/HtmlDocument.php:577 4 Joomla\CMS\Document\HtmlDocument->render() JROOT/libraries/src/Application/CMSApplication.php:1112 3 Joomla\CMS\Application\CMSApplication->render() JROOT/libraries/src/Application/SiteApplication.php:778 2 Joomla\CMS\Application\SiteApplication->render() JROOT/libraries/src/Application/CMSApplication.php:231 1 Joomla\CMS\Application\CMSApplication->execute() JROOT/index.php:46 - 查询时间：0.27 ms 最后一次查询之后：1.28 ms 查询内存： 0.022 MB 内存（查询 6.772 MB 之前） 返回排数：5
SELECT `name`,`element`
FROM `tbw0l_extensions`
WHERE `type` = 'plugin'
AND `folder` = 'finder'
AND `enabled` = 1id select_type table partitions type possible_keys key key_len ref rows filtered Extra 1 SIMPLE tbw0l_extensions NULL ref extension extension 82 const 102 1.00 Using index condition; Using where Status Duration starting 0.04 ms Executing hook on transaction 0.00 ms starting 0.01 ms checking permissions 0.00 ms Opening tables 0.02 ms init 0.00 ms System lock 0.01 ms optimizing 0.01 ms statistics 0.04 ms preparing 0.01 ms executing 0.06 ms end 0.00 ms query end 0.00 ms waiting for handler commit 0.01 ms closing tables 0.00 ms freeing items 0.01 ms cleaning up 0.01 ms # Caller File and line number 13 JDatabaseDriverMysqli->execute() JROOT/libraries/joomla/database/driver.php:1701 12 JDatabaseDriver->loadObjectList() JROOT/administrator/components/com_finder/helpers/language.php:126 11 FinderHelperLanguage::loadPluginLanguage() JROOT/modules/mod_finder/mod_finder.php:51 10 include JROOT/modules/mod_finder/mod_finder.php JROOT/libraries/src/Helper/ModuleHelper.php:200 9 Joomla\CMS\Helper\ModuleHelper::renderModule() JROOT/libraries/src/Document/Renderer/Html/ModuleRenderer.php:98 8 Joomla\CMS\Document\Renderer\Html\ModuleRenderer->render() JROOT/libraries/src/Document/Renderer/Html/ModulesRenderer.php:47 7 Joomla\CMS\Document\Renderer\Html\ModulesRenderer->render() JROOT/libraries/src/Document/HtmlDocument.php:511 6 Joomla\CMS\Document\HtmlDocument->getBuffer() JROOT/libraries/src/Document/HtmlDocument.php:803 5 Joomla\CMS\Document\HtmlDocument->_renderTemplate() JROOT/libraries/src/Document/HtmlDocument.php:577 4 Joomla\CMS\Document\HtmlDocument->render() JROOT/libraries/src/Application/CMSApplication.php:1112 3 Joomla\CMS\Application\CMSApplication->render() JROOT/libraries/src/Application/SiteApplication.php:778 2 Joomla\CMS\Application\SiteApplication->render() JROOT/libraries/src/Application/CMSApplication.php:231 1 Joomla\CMS\Application\CMSApplication->execute() JROOT/index.php:46 - 查询时间：0.23 ms 最后一次查询之后：0.67 ms 查询内存： 0.023 MB 内存（查询 6.792 MB 之前） 返回排数：4
SELECT `title`
FROM `tbw0l_finder_taxonomy`
WHERE `parent_id` = 1
AND `state` = 1
AND `access` IN (1,1,5)id select_type table partitions type possible_keys key key_len ref rows filtered Extra 1 SIMPLE tbw0l_finder_taxonomy NULL ref parent_id,state,access,idx_parent_published parent_id 4 const 4 68.72 Using where Status Duration starting 0.03 ms Executing hook on transaction 0.00 ms starting 0.00 ms checking permissions 0.00 ms Opening tables 0.02 ms init 0.00 ms System lock 0.00 ms optimizing 0.01 ms statistics 0.06 ms preparing 0.01 ms executing 0.02 ms end 0.00 ms query end 0.00 ms waiting for handler commit 0.01 ms closing tables 0.00 ms freeing items 0.01 ms cleaning up 0.01 ms # Caller File and line number 16 JDatabaseDriverMysqli->execute() JROOT/libraries/joomla/database/driver.php:1550 15 JDatabaseDriver->loadColumn() JROOT/administrator/components/com_finder/helpers/indexer/taxonomy.php:258 14 FinderIndexerTaxonomy::getBranchTitles() JROOT/administrator/components/com_finder/helpers/indexer/query.php:750 13 FinderIndexerQuery->processString() JROOT/administrator/components/com_finder/helpers/indexer/query.php:236 12 FinderIndexerQuery->__construct() JROOT/modules/mod_finder/helper.php:84 11 ModFinderHelper::getQuery() JROOT/modules/mod_finder/mod_finder.php:54 10 include JROOT/modules/mod_finder/mod_finder.php JROOT/libraries/src/Helper/ModuleHelper.php:200 9 Joomla\CMS\Helper\ModuleHelper::renderModule() JROOT/libraries/src/Document/Renderer/Html/ModuleRenderer.php:98 8 Joomla\CMS\Document\Renderer\Html\ModuleRenderer->render() JROOT/libraries/src/Document/Renderer/Html/ModulesRenderer.php:47 7 Joomla\CMS\Document\Renderer\Html\ModulesRenderer->render() JROOT/libraries/src/Document/HtmlDocument.php:511 6 Joomla\CMS\Document\HtmlDocument->getBuffer() JROOT/libraries/src/Document/HtmlDocument.php:803 5 Joomla\CMS\Document\HtmlDocument->_renderTemplate() JROOT/libraries/src/Document/HtmlDocument.php:577 4 Joomla\CMS\Document\HtmlDocument->render() JROOT/libraries/src/Application/CMSApplication.php:1112 3 Joomla\CMS\Application\CMSApplication->render() JROOT/libraries/src/Application/SiteApplication.php:778 2 Joomla\CMS\Application\SiteApplication->render() JROOT/libraries/src/Application/CMSApplication.php:231 1 Joomla\CMS\Application\CMSApplication->execute() JROOT/index.php:46
32 个查询类型记录，按记录升序排序
选择表：
6 × SELECT *
FROM tbw0l_assets2 × SELECT `id`,`name`,`rules`,`parent_id`
FROM `tbw0l_assets`2 × SELECT `extension_id` AS `id`,`element` AS `option`,`params`,`enabled`
FROM `tbw0l_extensions`2 × SELECT c.id, c.asset_id, c.access, c.alias, c.checked_out, c.checked_out_time, c.created_time, c.created_user_id, c.description, c.extension, c.hits, c.language, c.level, c.lft, c.metadata, c.metadesc, c.metakey, c.modified_time, c.note, c.params, c.parent_id, c.path, c.published, c.rgt, c.title, c.modified_user_id, c.version,
CASE WHEN CHAR_LENGTH(c.alias) != 0 THEN CONCAT_WS(':', c.id, c.alias) ELSE c.id END as slug
FROM `tbw0l_categories` AS `s`
INNER JOIN `tbw0l_categories` AS `c`
ON (s.lft < c.lft
AND c.lft < s.rgt
AND c.language IN ('zh-CN','*')) OR (c.lft <= s.lft
AND s.rgt <= c.rgt)1 × SELECT `data`
FROM `tbw0l_session`1 × SELECT `name`,`element`
FROM `tbw0l_extensions`1 × SELECT m.id, m.title, m.module, m.position, m.content, m.showtitle, m.params, mm.menuid
FROM tbw0l_modules AS m
LEFT JOIN tbw0l_modules_menu AS mm
ON mm.moduleid = m.id
LEFT JOIN tbw0l_extensions AS e
ON e.element = m.module
AND e.client_id = m.client_id1 × SELECT `c2`.`language`,CONCAT_WS(':', `c2`.`id`, `c2`.`alias`) AS `id`,CONCAT_WS(':', ca.id, ca.alias) AS `catid`
FROM `tbw0l_content` AS `c`
INNER JOIN `tbw0l_associations` AS `a`
ON a.id = c.`id`
AND a.context='com_content.item'
INNER JOIN `tbw0l_associations` AS `a2`
ON `a`.`key` = `a2`.`key`
INNER JOIN `tbw0l_content` AS `c2`
ON a2.id = c2.`id`
INNER JOIN `tbw0l_categories` AS `ca`
ON `c2`.`catid` = ca.id
AND ca.extension = 'com_content'1 × SELECT alias
FROM tbw0l_content1 × SELECT `alias`
FROM `tbw0l_content`1 × SELECT language,id
FROM `tbw0l_menu`1 × SELECT DISTINCT a.id, a.title, a.name, a.checked_out, a.checked_out_time, a.note, a.state, a.access, a.created_time, a.created_user_id, a.ordering, a.language, a.fieldparams, a.params, a.type, a.default_value, a.context, a.group_id, a.label, a.description, a.required,l.title AS language_title, l.image AS language_image,uc.name AS editor,ag.title AS access_level,ua.name AS author_name,g.title AS group_title, g.access as group_access, g.state AS group_state, g.note as group_note
FROM tbw0l_fields AS a
LEFT JOIN `tbw0l_languages` AS l
ON l.lang_code = a.language
LEFT JOIN tbw0l_users AS uc
ON uc.id=a.checked_out
LEFT JOIN tbw0l_viewlevels AS ag
ON ag.id = a.access
LEFT JOIN tbw0l_users AS ua
ON ua.id = a.created_user_id
LEFT JOIN tbw0l_fields_groups AS g
ON g.id = a.group_id
LEFT JOIN `tbw0l_fields_categories` AS fc
ON fc.field_id = a.id1 × SELECT `m`.`tag_id`,`t`.*
FROM `tbw0l_contentitem_tag_map` AS m
INNER JOIN `tbw0l_tags` AS t
ON `m`.`tag_id` = `t`.`id`1 × SELECT a.id, a.asset_id, a.title, a.alias, a.introtext, a.fulltext, a.state, a.catid, a.created, a.created_by, a.created_by_alias,
CASE WHEN a.modified = '0000-00-00 00:00:00' THEN a.created ELSE a.modified END as modified, a.modified_by, a.checked_out, a.checked_out_time, a.publish_up, a.publish_down, a.images, a.urls, a.attribs, a.version, a.ordering, a.metakey, a.metadesc, a.access, a.hits, a.metadata, a.featured, a.language, a.xreference,c.title AS category_title, c.alias AS category_alias, c.access AS category_access,u.name AS author,parent.title as parent_title, parent.id as parent_id, parent.path as parent_route, parent.alias as parent_alias,ROUND(v.rating_sum / v.rating_count, 0) AS rating, v.rating_count as rating_count
FROM tbw0l_content AS a
INNER JOIN tbw0l_categories AS c
on c.id = a.catid
LEFT JOIN tbw0l_users AS u
on u.id = a.created_by
LEFT JOIN tbw0l_categories as parent
ON parent.id = c.parent_id
LEFT JOIN tbw0l_content_rating AS v
ON a.id = v.content_id1 × SELECT `alias`,`catid`
FROM `tbw0l_content`1 × SELECT id, home, template, s.params
FROM tbw0l_template_styles as s
LEFT JOIN tbw0l_extensions as e
ON e.element=s.template
AND e.type='template'
AND e.client_id=s.client_id1 × SELECT `session_id`
FROM `tbw0l_session`1 × SELECT m.id, m.menutype, m.title, m.alias, m.note, m.path AS route, m.link, m.type, m.level, m.language,`m`.`browserNav`, m.access, m.params, m.home, m.img, m.template_style_id, m.component_id, m.parent_id,e.element as component
FROM tbw0l_menu AS m
LEFT JOIN tbw0l_extensions AS e
ON m.component_id = e.extension_id1 × SELECT `source`,`keepurlparams`
FROM `tbw0l_admintools_redirects`1 × SELECT `element`,`name`,`client_id`,`extension_id`
FROM `tbw0l_extensions`1 × SELECT *
FROM `tbw0l_admintools_wafexceptions`1 × SELECT *
FROM tbw0l_languages1 × SELECT `value`
FROM `tbw0l_admintools_storage`1 × SELECT `folder` AS `type`,`element` AS `name`,`params` AS `params`,`extension_id` AS `id`
FROM tbw0l_extensions1 × SELECT b.id
FROM tbw0l_usergroups AS a
LEFT JOIN tbw0l_usergroups AS b
ON b.lft <= a.lft
AND b.rgt >= a.rgt1 × SELECT id, rules
FROM `tbw0l_viewlevels1 × SELECT `title`
FROM `tbw0l_finder_taxonomy`
其它表：
1 × INSERT INTO `tbw0l_session` (`session_id`,`guest`,`time`,`userid`,`username`,`client_id`)
VALUES (X'72746f376d6d686936616e7670366d706d31396b7164306b6a6a', 1, 1790756360, 0, '', 01 × UPDATE `tbw0l_extensions`
SET `params` = '{\"mediaversion\":\"2f710e66d7f38447b743e0d6b9380ef4\"}'1 × SHOW FULL COLUMNS
FROM `tbw0l_assets1 × SHOW FULL COLUMNS
FROM `tbw0l_content1 × UPDATE tbw0l_content
SET `hits` = (`hits` + 1)